Anime/Games Mashup World

This will be a fanfic about a boy named Alex who is reborn within a world full of different anime’s and games. He will not retain memories so no knowing lore or plot. Only in special situations will his past soul ever react to things but those will be rare and not in the form of memories but rather just a suddenly impulse or feeling. Like headpat koneko or rolling a Gacha without hesitation type feelings. MC starts as a naive child in chapter one but by chapter 2 is a kind but ruthless when provoked teenager thanks to a certain Djinn within his head. Has a Gacha system that allows a free 10 roll everyday. No quests or sentience or secret plot here. Just good old Gacha and random stuff he receives. Worlds in this fanfic: Kengan,DxD,Jormungand,HOTD, and any that are recommended and that I feel will fit smoothly. This will be a harem but not a collect every girl situation. Rather the MC literally has zero interest in girls/romance due to the Djinn in his head giving him stories of betrayal and other things he doesn’t want to experience ever since he was a child. This resulted in a unique situation where he is trying to desperately avoid romance and basically a harem of girls have decided to work together to obtain him. (Make sense? Probably not but I think it’ll be fun to write at least.) Obviously don’t own a single thing. I’m just a dropout writing fanfics. Please don’t sue.