hiii.... i know ive been doing lots of ”im looking for...” posts... but i swear i looked for weeks and i still cant find this manga... so these are the features...~ gothic or gothic art ( i know it was goth or smt but i just cant find it anywhere~took place in a school.~ there is a parallel universe and the protagonist somehow got blamed for it and was forced to fix the problem by a teacher...~ the protogonist has a double personality.. probably is also suffering amnesia....~ shoujo maybe........~shounen ai maybe.....~ theres this siblings... the brother was the sadistic evil one thats why someone put a leash on him to keep him at bay or smt.... but for a while the sister was mistaken to be yhe evil one...sooo thats what i vaguely . thanks for the help again.... 🙂 4r395q

I think what you're looking for is Torikago Gakkyuu...?

It's the story about a boy, who has amnesia. Finds himself in a school. The teacher tells him to help some students in order to affect the parallel universe that the teacher sees through a monitor. The boy quickly changes personality when he feels deeply troubled, and that usually resolves each problem that the students have. The people, in the parallel universe, seem to be dressed in gothic military clothing since they're at war.

(I keep wondering if I have this story on my memory list... I do have the tendency to forget about this manga a couple of times, myself. ^___^ Edit: Ah yes. So I don't have it on my list. It's an old manga series by now. Why don't I have it here? Alright, next update; it'll be there!)

• Looking for memory related manga/manhwa? -> click me
• Public webtoon list -> click me
  Zero-Sum manga fix status (-super thank you, s-) -> http://bit.ly/1mTntim

Onegai Teacher maybe

my hero thank you TvTsooo much

^ I think you're responding to me so um... You're welcome! ^___^

• Looking for memory related manga/manhwa? -> click me
• Public webtoon list -> click me
  Zero-Sum manga fix status (-super thank you, s-) -> http://bit.ly/1mTntim