[Locked] Can't remember the name.

Trying to remember the name of a hentai manga I read once. It was a harem manga where the main protagonist was forced to take part in some occult ritual where he had to sleep with six virgins, and when he would wake up the next day the first person he would see, he would fall for and devote the rest of his life to. I can remember all the details except the name of it. Anybody know what it is I'm talking about?

Read the sticky. PM me what you did wrong.
It's not like you're a n00b without a clue.

Until then, the thread is locked.