Yanpapa to Tenshi to Ore

Tomohisa, a graduate student, is exhausted from studying every day. What's more, he's secretly gay and has zero experience in love!! It was during these dull days that he met Kouki, a yankee of the same age. Tomohisa gets irritated by Kouki who seems happy and has a cute daughter. While getting drunk one night Tomohisa confesses: "I'm gay, so I can't be happy!!" He thought Kouki would reject him, but he instead replies:, "I might be gay too"!? A cute love story between an unhappy student and young father.

(Source: Tokuma Shoten, translated)