OK fictionally speaking- their determination and smooth skills are attractive. i think a yandere’s charm is best shown when he’s jealous or there is a danger to FLs life. like being protected by a devilish ‘guardian angel’ while you’re unaware chilling sounds awsome 💀 i like it when they’re selfish but insecure. he monopolizes the MC for himself but also tries not to get hated by the mc. i rlly hate when they restrict the mc’s physical freedom so a yandere MLs obsession getting to the point of kidnapping mc in an enclosed room and mistreating her as ‘revenge’ for speaking to other guys would make me hate him. a good yandere should worship their loved one and think their crush can do no wrong. if their crush is seen with another guy, it must be the other guy’s fault for annoying the mc. so egotistical yanderes who hurt the mc are a no go for me. if they have generally bad character or aren’t smooth with their shenanigans i wouldn’t like them either. like a little failure and stumble in a yandere’s plan to get them exposed is good for shock effect and angst. but lets say if they’re stupid enough to hurt mc’s family members/platonic friends out of jealousy and get caught in the process, thats lame. i wouldn’t hate him but i would want him to be more skillful in his ‘petty’ crimes.