Gacha summoning is a system that will help our mc to summon powerful girls from many fiction female characters

It also gives him template to become more powerful

"Some of the world are "

Umineko

Tensura

Soul land 1,2,3

Marvel

DC

World of darkness

High school DXD

Fate/grand order

Demon king diamon

My instead death ability is to overpowered in another world

cthulhumythos

Scp

medaka box

madoka magica

magical index

kajiri kamui kagura

And more will be added

In future

This will be extremely overpowered and I mean extremely this is of him going to othe wold with his very very very very very big Haram

He is also very very evil and hardless

Going on his trip to another world for vacation

His Haram will have absolute loyalty and love for him no matter what

This is only for entertainment