Nao (heroine) had a crush on Tsubata-kun, but he was gay and didn't like girls.

She didn't give up. Dressed in a boys school uniform she solved two problems at once: her lovesickness, and his preference for young boys.

"Hey dude," she said, affecting as manly an attitude as she could.
"Put it up my ass!"

Tsubata-kun slid into her silky backdoor hole.
Nao covered up her vagina with a protective little bandaid to help the illusion. Is this the best their love will get?

[From DLsite English]