1)twins sharing a uke.
Twin (1) introduce Twin (2) to you. they have a threesome (2) develop a feeling for uke. they have mutual feeling and decide to exclude (1) out of their relationship. (1) is cool with it cause his just there for sex.
2) a friend took in a friend. seme created a company so he could spend more time with him
3) uke rejected his childhood friends confession. years later, uke developed feeling for seme after their short reunion.
4) - 5) student x student. uke accidently interuppted seme when he was middle of a girl giving him a blow job. seme make him give a blow job cause the girl run off.
sefure ijou, koibito miman!