TOXICREGRET
2nd couple.Seme was bff with uke of first story and didn’t know he was his fated pair.Finds out his bff is an omega and was about to attack him,but bff gets forcibly bitten by different seme.Years later,seme falls in love with cute guy,but gets rejected because the guy wants his fated pair.Seme finds out that the fated pair of the man he loves was the dude that bit his childhood friend he was about to attack years ago.He is heartbroken as his uke will never love him lol
Threesome?
DP
Shounen No Kyoukai