Nibun no Ippo

Hayami, a university student, harbors unspoken feelings for his childhood friend and best friend, Shino. Whether at home or at school, they’re always together. But every day, Hayami carefully conceals his feelings, maintaining a calm facade to avoid giving himself away.　One day, however, their dynamic is shaken when Igawa, a handsome new member of their club, starts getting closer to Shino. "I've been holding back my feelings for so long, yet he can just confess so easily..."

Struggling with jealousy, Hayami forces himself to stay in the role of "just a friend." But how long can he hold out before his true emotions come to light?

(Source: Tokuma Shoten, translated)

Note: Includes an extra.