The Girl I Saved on the Train Turned Out to Be My Childhood Friend, Vol. 3 (manga)

Ryou and Hina’s relationship is moving steadily along, and now they’ve already gone on their first date. But Torigoe still has one last card to play—a confession of love! Choosing between his beloved childhood friend and his only comrade at school is enough to make any boy’s head spin… Ryou’s got a tough decision to make, and he’d better make it quick—because, as it turns out, Hina heard everything!