Kohinata Hibiki

The protagonist of this work. He is the only son of Hanako. He is slow to grow physically and is annoyed when his appearance is compared to other boys his age.

For better or worse, he is passionate, possessive, and competitive, and when his pride is hurt, he takes thorough actions to recover it. He pretends that his secondary sexual characteristics have not yet arrived, but in fact he is an immensely fertile man.

At school, he seduces and fucks pretty girls and female teachers at will. He is taking swimming lessons to build his manly body, but he is still a beginner.