Responses
second manhwa is called
Symbiotic Relationship Between the Sun and the Moon (Yaoi)
First one is this
https://www.mangago.zone/read-manga/lucky_dice/
MC just came back from military, only to find out his friend and crush already has a boyfriend. He's not gay, but can't seem to get it up. He slept with a popular guy to test whether he's impotent or not <he's not>
Another manhwa, MC is yin and must sleep with a guy who is yang and musta avoid women. Many thanks in advance. (づ￣ ³￣)づ