![Hiroto](https://cdn.noitatnemucod.net/thumbnail/400x400/100/a97f61bab7cc1cd30381210138c986c5.jpg)
Hiroto
Tetsuhiro Morinaga best friend, works in a gay bar,same Morinaga frequented, provided you are giving advice on his relationship with Tatsumi-sempai, and he was the one who gave the drug to Morinaga, with which the story began Koi suru Boukun. It is also an original character of the manga Challengers.
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Koisuru Boukun
Supporting (Role) OVA
![Hirakawa, Daisuke](https://cdn.noitatnemucod.net/thumbnail/100x100/100/8bb074cfe9bbca6aa2af398fad7cef2a.jpg)