Boku Dake no Alpha

Suzuya, a plain Omega, has a peculiar condition where he doesn't produce pheromones. For some reason, however, he is attacked by the handsome alpha Kunimine while he goes on a heat. Feeling responsible, Kunimine asks Suzuya to go out, but he is put off by the difference between them and has a hard time saying yes. Furthermore, an Alpha Kosaka, who has always been attracted to Suzuya, also reacts to Suzuya's pheromones...?

(Source: Kadokawa, translated)