As a contrast to nsfw bara games I also really like games where PC can have a gay romance with NPC. Most of them are some type of RPG it seems
my examples:
Baldurs gate 2 - lots of mods, Dorn il Khan as a bi romance option
Dragon age1-Zevran
Dragon age 2-Anders and Feris
Dragon age Inquisition- Iron Bull, Dorian
Pathfinder:Path of the righteous- Sosiel, Dearan
Pathfinder:Kingmaker- Regongar
Expeditions Vikings-Ketill
Mass effect3- Kaidan, Steve (there are mods for Kaidan in mass effect 1 and 2)
Mass effect Andromeda- Jaal, Gill
Stardew Valley- any eligible Batchelor
Expeditions Rome- Caeso
Greedfall-Vasco
Cyberpunk 2077- Kerry
Spellforce 3 soul harvest- Kaiawu
Can you add more please? something that is a bit of a more involved storyline with a character.