for me it would have to be I Don't Want To Play Matchmaker. it already has multiple endings in the light novel. not sure if the manhwa will adapt them, but i'd love to see all the routes if it was an otome game.
it just depends on how engaging it is. the common route shows all the characters more and i really like that, but once you're on a character route the other characters just disappear so maybe common route for me lol
it's my main platform, i just wish more otome games got ported to PC. tried the Bustafellows PC port and it's genuinely the worst thing ever, wish they did it better