**Sister Masturbator 001**

Yuko glanced at the recycling bag that was supposed to be thrown out and noticed something inside that caught her attention.

A long cardboard box with her brother's name printed on the label.

She didn't recall ever seeing this box before. From that alone, she could guess that it was probably something her brother had purchased in secret without telling her.

*What exactly did he buy?*

The delivery label only listed it as "health care products."

Health care products? Yuko frowned slightly, feeling uneasy about her brother keeping secrets from her. After their parents passed away, she had worked hard to raise him using their inheritance and her salary, hoping that despite being his stepsister, he would treat her as family.

*Since we're family, is there anything I can't talk to him about?* She resolved to find some time to ask her brother why he was buying health care products when he was already a high school senior preparing for college entrance exams—and why he didn't mention it to her. If she hadn't come home early today because of work, she wouldn't have even seen the box.

But now she was in a hurry. She tore off the label, stuffed it into her bag, and put the box back in the recycling bag. Slipping on her high heels, she quickly headed out the door.

She was on her way to a class reunion and would deal with this matter after she got back.

---

Half an hour later, Yuko arrived at a restaurant on her motorcycle and spotted her best friend, Meiling, waving from afar. Smiling, she walked over and sat down next to her.

"Sorry, I'm late," Yuko said.

"Not at all. Half the people who said they'd come haven't even shown up yet," Meiling replied.

"So few people?"

"Yeah, it's year-end—everyone's schedule is packed."

"How are we supposed to order food then?"

"Don't worry, just order your own." Meiling poured a glass of iced tea for Yuko. "How have you been lately?"

"Not bad, just the usual."

Yuko took a sip, letting the cold tea slide down her throat, then sighed softly.

"Life's been steady—neither great nor terrible."

Meiling chuckled. "That's better than things getting worse. By the way, do you have a boyfriend?"

"How would I have time for that?" Yuko replied with a hint of frustration. "I'm busy with work and taking care of my brother at home."

"Oh, right. You have a younger brother."

"Anyway, I don't plan on dating until he gets into college."

"But Yuko, didn't your ex-boyfriend want to get back together with you?"

"No."

"Why not? Didn't you break up without a clear reason? Were you the one who dumped him?"

Yuko pursed her lips. How could she tell Meiling that she broke up with him because he had a small penis and suffered from premature ejaculation, which left her completely unsatisfied?

But she didn't want to say that—she had to protect his dignity.

"It's none of your business, and I'm too lazy to explain," she said, brushing it off. Yuko then picked up her cup and took a big gulp.

She immediately choked. "Pfft, pfft—Is this beer? Meiling, what are you doing?"

"You grabbed the wrong cup, and you're blaming me?"

"Really?" Yuko put the cup back on the table, muttering, "This is bad. I came here on a motorcycle..."

"It's fine. Just ride slower. The traffic police won't stop you for a breathalyzer test."

"Ah... I guess that's my only option."

In the end, half of the classmates didn't show up for the reunion. After finishing their meal, they decided to call it a night since everyone had work the next day. They were no longer the type of young people who could stay up all night and still be full of energy.

---

After returning home, Yuko removed the black stockings she had been wearing since work and tossed them into the laundry basket. Although she was slightly tipsy, she wasn't particularly drunk—but she was definitely more impulsive.

Her eyes drifted toward her brother's room, where the light was still on. On impulse, she decided to confront him.

Normally, Yuko would observe her brother for a few days, ensuring he was in good condition and mentally preparing herself before asking questions. But perhaps due to the alcohol, those concerns didn't cross her mind tonight.

She pulled out the label she had torn off the cardboard box earlier and held it in her hand. After discreetly sniffing her uniform to ensure the smell of cigarettes and alcohol wasn't too strong, Yuko walked toward her brother's room.

Inside, a tall, slender boy sat at his desk, flipping through a book and jotting down notes. He was so focused that he didn't notice her entering.

This was Yuko's younger brother, Shota. She observed him for a long moment, feeling a rare sense of pride at his dedication to his studies. After confirming that he wasn't distracted, she cleared her throat and said,

"Shota."

The young man looked up, blinking in surprise. "It's so late. Do you need something?"

"No, I just wanted to check on you." Yuko decided not to jump straight to the point. "How's your studying going?"

"Not bad. No problems."

"Have your grades improved?"

"Uh... they've slipped a little."

"Slipped? There's less than a month until finals—what happened? Did you run into any problems?"

"N-no… nothing." Shota turned his head away, unable to meet her eyes.

Yuko, having raised him for years, knew exactly what that guilty expression meant. Something was definitely wrong. Her gaze drifted to the label in her hand, and she felt like she had found the answer.

"Shota," she said sternly, "look at your sister." Her tone was serious now. "Tell me the truth—are you using drugs?"

"Huh?" Shota's eyes widened in confusion. "Drugs? What are you talking about?"

"Don't lie to me." Yuko held up the label. "I found this in the recycling bag. Look at it."

Shota's face turned crimson as he glanced at the label. His reaction only made Yuko more certain of her suspicion.

Furious, she raised her voice. "So you really are doing drugs? Do you know what that will do to you? It'll ruin your life! No matter how much money you make, it'll all go to drug dealers. Why are you so stupid? Why would you choose this when there are so many other things you can do?"

"Sister, you're misunderstanding! I don't do drugs!"

"Then what's the matter with this health product? Why is it so expensive? It costs more than a thousand for one bag? "

"Sister, that is neither a health food nor a drug."

"What else is it?"

"Uh... this..."

"Tell me the truth, or I will have to send you to the police station myself."

"No! No! No, no!"

"Then explain it to me clearly!"

Under the influence of alcohol, the brain inexplicably overcame the fear and dared to speak loudly to his brother like that. Shota was probably frightened by her. He hesitated for a long time before speaking with a burning face.

"That's really not drugs, it's a masturbation cup."

"Masturbation cup? What is that?"

"Sister, you don't know?"

"I don't know, is it a cup?"

"It's not a cup."

"So what is that for? "Uh... that is..." Shota gritted his teeth and said, "it's, it's a toy for masturbation!"

Yuko blinked, and after a while she opened her mouth in confusion.

"Huh?"

The two of them were in a very awkward atmosphere. Yuko looked at her brother who was so ashamed that he wanted to find a hole to hide in. After thinking for a long time, she asked awkwardly:

"So why did you buy this thing?"

Shota didn't know what to do. Knowing whether his sister really didn't know or was pretending to be ignorant, he had already decided to throw the jar into the ground anyway, so he shamelessly said:

"Of course, I use it to masturbate, what else?

She's not completely without sexual experience, and she knows that boys can't control themselves during puberty. Shota is already eighteen years old, and occasionally she would find some toilet paper with a strange smell when cleaning up the garbage, but as an older sister she always had to be considerate of her younger brother, so she would just turn a blind eye and pretend not to see it.

What she couldn't understand was why masturbation required props and she had to spend money to buy them. Thinking of this, she coughed and said.

"But can't you just masturbate with your hands?"

Shota seemed to have expected to be asked this question and answered directly.

"It's too slow to masturbate by hand and it takes a lot of time. It's better to use a masturbation cup and it will be done in a few minutes."

"Why is it slow?"

"I don't know, it's just slower anyway." Shota began to complain: "Sister, you also know that I, as an aspiring graduate, how can I waste my precious time on masturbation? But as a participant of the upcoming exam, I am under a lot of pressure and always need some channels to vent my stress. And after masturbating, I always feel that my mind is particularly clear and my study efficiency is much faster—"

"...Take it out and let me see it." Yuko suddenly interrupted Shota.

The younger brother was stared at by his sister and knew that he had to be obedient. He reached out and opened the desk drawer, then took out a masturbation cup wrapped tightly in cotton cloth.

It was a flesh-colored strip that felt quite elastic. There was a hole in the middle, and Yuko knew what it was for at a glance. A slight ginkgo-like scent wafted over, and she frowned, but she didn't show any disgust.

"How much is this?"

"It's quite cheap, around three hundred," Shota answered honestly. "But it can be reused."

"So you bought this with the pocket money your sister gave you?"

"No, I used my scholarship." Shota sighed and said, "your money was hard-earned. I dare not spend it."

Although it was not his own money, it was the scholarship money he used. Yuko felt helpless, but she didn't want to be too harsh on her brother. She returned the masturbation cup to Shota and said:

"Okay, I won't pursue this. Since you've already spent money on it, use it well, okay?"

"I understand."

"Well, continue studying. I'm going to take a bath and go to bed, good night."

"Good night, sis."