I recently recalled a manga i read a long while ago that I wanted to reread. It was canceled early but had an interesting concept.

It was about this rich dude with glasses that was taken to this world through a mirror in which ones fears would attack and try and kill him. He meets others there, like this shy artist dude who is afraid of being touched and a chick who i think has a thing for the MC. The world has a few other students there too, who gets powers based on their likes. The MC likes to gamble so his power allows him to gamble certain things in order to get what he wants and the artist dude could bring his art to life. The chick, I think her ability had something to do with music and some kind of sitting guitar looking thing.

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im not angel, but im more pure that you.

It's Rex fabula.