I really dislike Jun. For me a much better example is the romance version of Krassador in @AllenGies’ old Apex Patrol game.
Jun is a really, really creepy Yandere who does not even seem to respect the mc, which is why I do not like yanderes in general as at least some form of mutual respect is vital to even a fictional relationship for me. Jun, imho, utterly lacks that.
I agree, depending on the way his character development goes and whether or not he´s revealed to be one of the supervillains Vince in @RenaB ´s Model Citizens wip could possibly be another.
I also really, really like the wip ¨Regrets of the Traitor¨ for this reason.
If and when it is finished and if there was ever to be prequel of it in the form of the prologue ¨heroes¨ adventuring days my cute half-elf sorcerer would probably mostly fit this trope..