She Likes Gays, but Not Me, Vol. 1 — Akira Hirahara

Based on the critically claimed novel. High schooler Atsushi Andou has always hidden the fact that he's gay. But one day, he sees his classmate Sae Miura with a BL book-a small moment with major consequences. Atsushi longs for a “normal” happiness with a loving wife and a biological child, but what can he do when he's not turned on by women?