Tokyo.

In a convenience store open 24 hours a day, a young boy pushed a cart and boxes of unopened goods into the warehouse. He didn't care about the sweat oozing from his forehead. 

After adjusting the baseball cap on his head, he held the list of goods in his hand while checking the mountain of general merchandise in front of him.

He was wearing a rustic brown-green convenience store uniform, and under his black cap was a slightly childish face. He was about 1.74 meters tall, and although his thin shoulders gave him a frail look, his face was fair and handsome, with a youthful vibe.

"Thank you for your hard work, Fujii-kun."

"With all these responsibilities, I'd be stuck if I were by myself. I'm not sure I could ever get everything done."

The convenience store manager, Yuriko Matsumoto, who was in her 37s or 38s, walked in at some point, handed over a bottle of soda water, and looked at Fujii Itsuki with admiration.

"Ah, this is what I should be doing."

Itsuki said politely, wiped the sweat that was about to seep into the corners of his eyes with his arm, and took the soda water, unscrewed the cap, and took a few sips.

It is September, the tail end of summer has not yet completely faded away, and the weather in Tokyo is very hot.

"Drink slowly, Fujii-kun." The store manager, Matsumoto Yuriko, said it with a sweet smile. 

Her eyes gradually moved down along the soda water left at the corner of Itsuki's mouth, across his smooth neck and collarbone with sweat dripping down, and across his dark green employee shirt that had already been soaked.

There is even a trend continuing downward.

Yuriko licked her dry lips gently and said with a smile, "Is Fujii-kun still in school?"

"Yes, highschool."

Itsuki nodded and lifted his baseball cap to dissipate the heat from his head.

"You're amazing! You're so capable that you don't even come across a student at all!" Yuriko praised him generously, her eyes fixed on the young and handsome face of Itsuki.

"But students should focus on their studies. Why would you choose to work part-time?"

"Um, it's just..." Itsuki paused, wanting to say something but stopping. "It's just that a situation arose at home."

He had a helpless expression.

Seeing this, Yuriko tactfully stopped asking further questions.

It's nothing more than family difficulties and the need to work to make a living, or family discord and leaving the family early to live independently.

No matter which situation it is, it means one thing: the boy in front of her needs a job and needs money.

Thinking of this, she couldn't help but feel a little strange in her heart.

"I see."

"Fujii-kun, this is your salary for this month." She took out the banknotes that had been wrapped in an envelope from her pocket at the right time.

"Just continue to work here with peace of mind."

"Yes, thank you for your help, manager!" He took the envelope and bowed slightly to express his gratitude with a sincere attitude.

"Manager, these goods have all been checked, and the numbers are correct." He turned his head to look at the department stores piled up in the corner of the warehouse and handed the inventory list to Yuriko. "If there is nothing else, I will be going back."

"Go ahead, Fujii-kun; you've worked hard today." She held her chest with both hands. 

Under her black hip skirt, she had a pair of well-proportioned, white thighs and a curvy body. 

She was 37 years old at the time, and she was well-maintained and beautiful.

Watching the boy's departure, Yuriko turned around and glanced at the goods in the warehouse meaningfully.

…

In the evening, after work.

"Ding Dong!"

As the bell of the store door rang, Itsuki, who had changed back into his school uniform, slowly walked out of the convenience store.

"Eighty thousand yen."

Walking past the streets, Itsuki opened the envelope and counted the bills in it. 

There was exactly 10,000 yen inside—no more, no less.

He worked as a clerk and only earned 4,000 yuan a month after working so hard.

After all, he was a part-time worker, and his salary and benefits are not comparable to those of regular employees. 

Not to mention that Japanese law has strict restrictions on students' part-time work, which cannot exceed 28 hours per week and cannot be later than 10 p.m. on a single day.

Eighty thousand was fine.

It was enough for his daily expenses as an ordinary student.

With a light sigh, Itsuki put the banknotes back into the envelope and put them in his pocket, then walked to the nearest tram station and took the Toden Arakawa Line towards Minami-Senju.

Fujii Itsuki, 18 years old, was a time traveler.

It has been more than a month since he traveled to this world.

When he woke up, he found himself an ordinary high school student in Arakawa, Tokyo. 

He was cowardly, had average grades, and came from a terrible family.

His biological mother died early, and his father was dating a woman whose husband had just died and had two daughters. 

But before they got married and registered, his father died in a car accident one drunken night.

Before his death, with the witness of a lawyer, he entrusted himself and his family's property to a woman Itsuki had never met.

After the hasty funeral, the Fujii family property became the territory of the mother and her two daughters. 

Itsuki, the only living bloodline, became like an outsider living under someone else's roof, enduring his life in humiliation.

It was his first time in Tokyo, a foreign country. As a worker and unlucky guy, it took him a long time to gradually adapt to his current life.

*Click.*

The train door opened, and he followed the crowd out of the station. 

He walked straight ahead along Minami-Senju Street for ten minutes before stopping in front of a two-story building.

The Fujii residence is a typical "single-family house," also known as a detached house, and is the most traditional two- or three-story independent Japanese-style building in Japan.

It is a two-story building with a small yard and a garage on the first floor. 

In the anime, Nobita's home is a one-story building like this.

Passing the houseplate with the words "Fujii" engraved on it, Itsuki turned his head and glanced at the garage. 

It was empty. 

He guessed that his "aunt" had not yet gotten off work.

*Crack.*

Taking out the key to unlock the door, he changed into slippers at the entrance, ignored the girl watching TV on the sofa in the living room, and walked quickly up the stairs to the bedroom on the second floor.

Returning to his room and closing the door, he took out his newly-paid salary and threw it next to his pillow, then lay down on the bed exhausted.

*Crack*

There was a slight sound of the door handle turning, and then a teenage girl walked in.

Shimizu Ai, one of Aunt Momonogi Eiko's daughters, is the girl who was watching TV on the sofa just now.

Shimizu Ai was 18 years old this year. She is not tall and has a pretty face.

She has a cute face full of collagen and a childish look. She wears a pink shirt and denim shorts, revealing her fair and delicate skin. She has twin ponytails, making her even cuter.

However, cuteness is only her appearance. Only Itsuki knows what kind of devilish heart is hidden under her cute appearance.

"Brother, you're back!"

"By the way, today is payday."

Shimizu Ai's pretty face was covered with a bright smile. 

She stretched out her hands in front of Itsuki and said in a tough tone that was completely different from her cute smile: "Hand it over obediently, this month's salary."