Reborn In Tokyo After Picking Up Sayu Who Ran Away From Home

   Chapter 566 Theoretical Mechanics

   "System, open the store."

   The next evening, Kato Yusuke, who was at home alone, studied the system.

  【Commodities: dried small fish, wind chimes, U disk, portable oxygen bottle, tracker, beauty cream, scarf from Dongyun family, qi and blood medicine, ordinary version of Wanyu medicine】

   (Description: A new purchasable item is added every month.)

  【Money: Each point can be exchanged for 100 yen】

   (Note: Only one-way exchange is supported, and there is no upper limit on the amount of exchange.)

  【Physical Strength: 1 point/5000 points】

  【Charm: 1 point/50000 points】

  【Intelligence: 1 point/100000 points】

   (After all attributes exceed 10 points, the points required to redeem each point will increase exponentially.)

  …

   First this month's additions:

  【Portable Oxygen Cylinder: The savior of outdoor sports enthusiasts, you can replenish oxygen anytime and anywhere (100 points). 】

   A thing that seems useful but rarely has the opportunity to use it is basically useless.

   Kato Yusuke jumped over it.

   This is followed by skills of the month:

  [Entry-level bartending (100), skilled maid (1000), proficient language master (10000), master pet grooming (100000)]

   I don’t know if the Myriad Healing Medicine refreshed last month ran out of luck, and the skills refreshed this month don’t have anything eye-catching.

   Even a skilled maid whose purpose is unknown actually makes one's eyes dark...

   "System, exchange language mastery."

   "Ding, after deducting 10,000 points, the host will gain proficient language mastery."

   A huge stream of information poured into his mind.

   Kato Yusuke closed his eyes and received it quietly, and opened it slowly after about ten minutes.

   Then, he spoke directly to the void.

   "Empiezadondeestás.Usaloquetienes.Hazloquepuedas. (Start where you are, use what you have, do what you can.

   is pure Spanish.

   "Làoùons'aime, ilnefaitjamaisnuit. (Where there is love is never dark.

   is pure French.

   "Das Schicksalbestimmt, werinunser Lebenreinkommt. Aberesist das Herz, dasentscheidet, werinnendrinbleibt.

   (Fate decides who comes into our lives, and heart decides who we stand with.)”

   is pure German.

   "Meow meow meow meow?"

   is pure... uh, cat language.

   Kato Yusuke, who had tested his new abilities twice, lowered his head and met a pair of green and clear pupils.

   The black cat was looking at him with its head tilted, as if curious about his purring.

   Kato Yusuke simply hugged it on his lap and took out his phone while stroking it.

   Randomly found several foreign language movie video clips on the Internet.

  Under the condition of not reading the subtitles and listening to the original sound, he found that he could easily understand every sentence in it, as simple as breathing.

  Compared to the tasteless oxygen cylinder in front, the practicality of this skill is much higher.

  He went on to study.

   "System, open panel."

  【Character: Kato Yusuke (intruder of time and space)】

   (Note: Time has left traces on you, your life has been deducted for about ten years, and there are certain negative effects.)

  【Physical Strength: 8】

  【Intelligence: 8】

  【Charm: 9】

   (Evaluation: Pose of the Dragon and Phoenix)

  [Items: U disk, Qi and Blood Medicine (17 capsules), Tracker (Available times 1), Memory Potion (empty), "Guben Guben Peiyuan Zhuanggong Instruction Book"]

  [Skills: Dodge (Entry Level), Shooting (Proficient), Fighting (Proficient), Camping (Proficient), Language Mastery (Proficient), Painting (Master)]

  【Points: 384170】

   Overall, the highly practical skill of "language mastery" has become the only highlight of this month.

   Kato Yusuke focused on personal belongings.

   With the movement of his mind, an empty glass test tube and a book appeared in his palm.

  【Memory Potion (empty)】

   "Guben Peiyuan Zhuanggong Guidance"

  The two items are the rewards from the previous task of [The Lord of the Harem].

  Because of his busy schedule a while ago, he has not been free to study these two things until now.

  【Memory Potion (empty): You can copy and store a piece of the user's memory, so that the person who drinks the potion can experience it from the perspective of a third party. 】

   is the same as the literal meaning, it is a prop that allows one to see other people's memories.

   Kato Yusuke was a little absent-minded, recalling the past involuntarily.

   A long time ago, he drank a similar potion. That brought him memories of Fujimoto, and the work "The Chainsaw Man".

  Because he had experienced it himself, he knew the feeling after drinking the potion.

   - It's like watching a movie.

   He can feel the blandness and splendor of it, and he can also personally experience the various emotions of the protagonist, which has a strong sense of substitution.

   can be the same.

   Although there is a strong sense of substitution, the memory still belongs to the original owner himself. The audience can only be regarded as a bystander and cannot really become the other party.

  ‘If I put my memory in, the suffix name of this thing should become mine. ’

   Kato Yusuke thought silently and put the props back.

   "Unfortunately, I have no desire to share, nor do I have any memories to share with others."

   saw the memory potion, followed by the next one.

   He started to open the "Guben Peiyuan Zhuanggong Guidance Book" and read it at will.

   There are a lot of text instructions recorded on it, and there are also corresponding explanation pictures, which depict villains who make different actions.

  ‘This system reward is really not serious. ' Kato Yusuke murmured in his heart, always feeling as if he was underestimated.

   With nothing to do, he decided to try it out.

  Put the black cat on the ground, then come to the center of the room and stand still.

   While holding the zonggong instruction book, he set up a posture according to the above instructions.

  Bend your knees and sink your hips, feet shoulder-width apart, close your jaws, loosen your shoulders, loosen your waist and hold your hips, open your knees to both sides, and keep your spine straight.

   Kato Yusuke closed his eyes slightly, inhaled and moved his palms three times, and finally pushed out his hands and hugged them round his chest.

   The legs are the main part, and the muscles of the body are suddenly tense.

   The whole set of actions is a bit similar to standing up for health, and he didn't feel any mystery of the system from it.

  ‘Can this really consolidate one’s roots…? ’

   Kato Yusuke was skeptical about this, and he had a faint feeling of being deceived, but in the next second he saw the requirement of "keep your mind free of distractions", so he gave up thinking.

  Just like that, he quietly practiced Zonggong in the room.

   At first, the black cat was curious about his behavior, and kept circling around his feet and meowing, but after seeing that he remained motionless, he quickly lost interest and went to play by himself.

   As time passed, Kato Yusuke felt his body warm up slightly, and a warmth slowly but surely kept emerging from his dantian, spreading to his limbs.

   At first, it was a comfortable temperature like a hand warmer.

   Gradually, the hand warmer turned into an electric heater, and the electric heater turned into a small stove, which made Kato Yusuke slightly frown and sweat slightly.

   At this time, the feeling is not so comfortable, but it is still acceptable.

   But in the end, he felt like he was holding a big fireball. Not only did his heart beat faster, he even felt a dry mouth.

   He felt something was wrong, and immediately stopped standing, took a bottle of oolong tea from the refrigerator and started drinking.

  The cold tea poured into the mouth, down the throat and into the stomach, bringing a cool breeze.

The coolness of the    drink temporarily suppressed the heat in his body, making him feel a little better.

   But only slightly.

   It didn't take a while for that dry heat to make a comeback!

   Kato Yusuke's body seemed to be accumulating some kind of energy, which made his body temperature rise.

   "System, what's going on with this work—?" He asked, but received no response.

   He tore off the long sleeves he was wearing, then dashed into the bathroom to turn on the faucet, and kept splashing cold water on his face.

   But his body seemed not to belong to him, and he still refused to calm down obediently.

   Up to now, the heat in his body is no longer under his control.

   "This is what you call Guben Peiyuan!? System!"

   Kato Yusuke gritted his teeth and stared at the mirror. Inside, his face was flushed, his handsome face was faintly hideous, and blue veins appeared around his temples.

   He took a deep breath and decided to take a cold shower to calm himself down, just as he was about to undress...

  Ding dong~

  —The doorbell was suddenly rang.

   Kato Yusuke couldn't help frowning deeply, pulled a bath towel over his shoulders, and walked to open the door with heavy steps.

   "Which one...?"

   Appeared in front of me was a mysterious woman wearing a black trench coat and black high heels.

   "Yo~"

   Akizaka Akane pinched the brim of his hat, raised his eyes slightly, and greeted frivolously, "Good evening, stinky brat."

   A pair of burgundy eyes narrowed playfully, as if they were reflecting each other with the color of his hair, with a passion like fire.

   Kato Yusuke couldn't help being stunned when he saw the person coming, while Kasaka Akane stared at his toned chest muscles exposed from the bath towel, his eyes moved slightly.

   "Huh~ what? You just finished taking a shower?"

   Kato Yusuke was pulled back to reality by her voice, his eyes suddenly darkened, and he pulled her into the room.

"what…!"

   Hongsaka Zhuyin was dragged to a stagger by him for a while, staggered two steps under his feet, and crashed into his arms.

  Pop Dang—

  The sound of the door closing sounded from behind.

"Hey you-!"

  Because of Kato Yusuke's rough action, Aksaka Akane was about to get angry, but was pressed against the wall by an irresistible force.

   Immediately afterwards, a strong body pressed up.

   She raised her head subconsciously and met a pair of wild beast-like fiery black eyes, as if she was going to devour herself.

   Her expression froze, and before she could speak, Kato Yusuke arrogantly lowered his head and kissed her lips, wanting to ask for it.

   "Um-!?"

  The heavy masculine breath rushed towards her face, and the hot breath hit her face, causing her heart to numb.

   The fiery breath of the other party entered her mouth, and Kasaka Zhuyin felt a softness in her waist, but she was caught in the next second.

   She instinctively reached out and pushed it, pressing it on his hard chest, and it was hot, even a little wet.

   At this moment, Kato Yusuke tasted a slight smell of smoke and alcohol, and the dryness in his body seemed to have found a vent, becoming more aggressive and entangled with her.

   Redsaka Akane was embarrassed by his aggressive attack, so he put his arms around his neck, launched a counterattack and kissed back, and was entangled by Kato Yusuke.

  The air in the entrance heated up, and the sound of each other's swallowing was amplified.

   Kato Yusuke raised his hand slowly, and pierced her fingers into her hair with a domineering look.

   After a while, all her lipstick rubbed onto his face.

   For a long time, they finally separated.

   Akizaka Akane took a deep breath as if suffocating, and then had time to look at someone.

   She was not ambiguous by the saliva pulled out between the two, but laughed at the mottled lipstick mark on his mouth.

   "Hu, hu... ah ha ha ha, did you take the wrong medicine today?"

   Kato Yusuke didn't answer, rubbed the back of his hand around his lips, wiped off the saliva and lipstick, and said in a hoarse voice, "No, I have an antidote."

   "An antidote?"

   Akizaka Akane frowned in confusion, not understanding what he meant, but the next second he was hugged by his hips and strode into the bathroom.

   "Wait for me! What do you want to do?"

   "I'm sweating, I need to take a shower."

   Kato Yusuke put her on the sink and took off his shirt while talking.

  It was already December now, but the other party went out at night wearing a pure black dress with a fluffy tassel design at the hem, which could barely cover his raised buttocks, and he didn't know who he was wearing it for.

  Click ~ two high heels were dropped on the ground, and then others.

   Redsaka Zhuyin's eyelids tightened slightly, and scolded with a smile: "You rude little brat, dare to ask me to wait for you. Anyway, wash your face, I'll wait outside."

   As she said that, she wanted to jump off the sink, but Yusuke Kato didn't give her the chance, and went to the shower with her arms around her waist.

The    switch is turned on and hot water flows out.

   Kato Yusuke pressed against her ear and blew a breath of hot air into it: "Let's go together, Auntie."

   There is a wildness in his voice.

   "You little bastard... I'm here to talk to you about business!"

   Redsaka Zhuyin blushed, the regular transformation had already faded, revealing the original coordinates, the two extreme points pointed straight towards him, teasing someone's functional integral.

   Kato Yusuke licked his lips, his mouth was a little dry, and he replied calmly: "Little auntie, be obedient, don't fret, and be my antidote."

  Woooo-, swoosh-.

  The sound of the shower and running water resounded in the bathroom, blending with water and milk.

  …

   "Speaking of which, what are you going to talk about, Auntie?" Kato Yusuke asked actively.

   "Well...it's nothing, it's just that my Laplace value has not been calculated by the E-L equation for a long time..."

   Redsaka Zhuyin replied in a hoarse voice: "Aren't you very smart? So I came to you for help."

   "So it turns out, this is not difficult. Then I will derive the equation of motion first, and let me see how your regular momentum is."

   Kato Yusuke began to guess the simple harmonic motion solution, and the increasing angular velocity made his heart surge.

   "Ah! The Ross function doesn't work."

   Akizaka Akane said in alarm and anger: "It was agreed that only the Lagrange equations will be guided, why did you use Hamiltonian mechanics!"

   Kato Yusuke ignored him, calculating to himself.

   Redsaka Zhuyin saw that he was so stubborn, and finally gave in.

   "Okay, the Hamiltonian canonical equation is not impossible...but you must bring the Boisson brackets!"

   "Boisson brackets are too cumbersome, let's just vary!"

   The sudden change in the mathematical method caught Kasaka Akane by surprise, and hurriedly tried to stop it, but found that his calculations were about to come to an end.

   "Well...it seems to be found, my motion points are counted, and a little more. That's right...it's the conserved quantity..."

   After a lot of calculations, Aksaka Zhuyin's head went blank, almost exhausting all her energy.

   Kato Yusuke stared at the calculated results, frowned, and said, "This is not right."

   "…what's wrong?"

   "There is a problem with the calculation result, and it has to be recalculated several times."

   Hongsaka Zhuyin's face turned pale when she heard it: "You have to do the math for yourself, I've had enough of this damned theoretical mechanics! My mother won't accompany you!"

   However, Kato Yusuke disagreed and took her back.

   "Little auntie, be obedient. If you don't calculate the correct result today, I won't let you go."

"You bastard-!"

  …

   (end of this chapter)