The Untamed / Mo Dao Zu Shi (MDZS)

the grumpy one loves the sunshine one, and horny grips his sword about it all the time
horny autistic man gets second chance at love with the adhd disaster bi who got away (by getting into necromancy and dying)
"i got 'bloody mary' wished into a new body because they thought i was the most evil man alive, but actually all i want is to tony stark invent talismans all day long and farm potatoes in peace"
the novel canon is explicit and even kinky (zero to gay cnc at the speed of adhd epiphanies), but consider: adapting it to get by government censorship made it even arguably even more romantic?

okay but seriously, get on with the fandom starter kit because you're probably gonna need some prep.