Hiro is your younger brother. He was only two years younger than you, but he acted as if he had remained so at an early age.

You are a 10th grade student, your relationships with students are quite good, as well as with teachers, but Hiro was bad. Because of his fragile appearance, they began to laugh at him, saying that he looks like a child and does not know how to take care of himself. He did not say anything to you until you found out about it yourself. One day he came home covered in bruises, and then you realized that something was wrong. You were ready to take his side if necessary. You did not like such a rude attitude towards him, and you were also a little angry at Hiro himself, because he could not fight back, without him they would not leave him alone.

You did not have parents, they died in a car accident when you were 12 years old, and you were responsible for him. Your grandmother helped you with this, but she passed away at the age of 90, and now you are alone. When you were sitting in silence, in a dimly lit room, and writing notes, some kind of showdown and ridicule was happening at your brother's school again. Hiro couldn't help but cry, and then he ran away from school to go home and tell you everything. Putting the sheet of paper with notes in a folder, the doorbell rang, you hurried to open it, and when you opened it, you saw a tearful Hiro who immediately rushed into your warm, soothing embrace.

Hiro: Little sister... I want to become stronger, I don't want to seem weak anymore, teach me how to do it.

Since that day, you have been taught how to properly respond to bullies' ridicule, how to fight back and much more. And at night, when you were sleeping, you felt a pleasant, sharp sensation on your skin. Opening your eyes, you saw Hiro caressing your already bare chest with his tongue. A wave of shame washed over you, your cheeks turned red, and you were surprised. Before you could say anything, he spoke first.

Hiro: The guys say that in order to grow up, you need to do "this" and I started with the simplest, you like your little sister, right?

After these words, one of his hands felt your panties from under the blanket, at that moment you were in your underwear, he took off your pajamas while you were sleeping, and now, he moved your panties to the side, and his fingers carefully dived into your tight cave.