Go read After Reuniting with my Childhood Friend, It Turned Out Both of Us had Become Tiddy Monsters if you really think that's the best romcom revenge protag
I understand that he has those aspects, but I’m saying he has no personality. He has nothing to him other than revenge, he isn’t a character with actual motivations.
Revenge is a motivation ya fuckin idiot. Besides, if you're gonna argue he has no sexuality, he got flustered being teased by the teacher a few chapters back.