The Otherworld Card Collector

"Idol Girlfriend", "Girl's Curveball", "First Love Time"...
Shirou Matou travels to a world that is familiar but slightly different from the normal two-dimensional world.
There are girls with different attributes here, such as evil girls, devilish girls, bad girls, and girls waiting for God.
There are also the four classic kings: Shota, Fat House, Nigo, and Yellow Hair.
At the same time, Matou Shirou looked at himself in the floor-length mirror:
A handsome face that looks a bit childish like a shota;
Like the fat otaku, he also belongs to the identity of an otaku;
A battle-hardened body like Nico's;
The hair color is as attractive to young girls as yellow hair.
The four strongest attributes are already in the formation, not to mention that on this basis you can strengthen yourself by collecting cards.
Evil girl + evil girl + evil girl, single fusion, obtain talent (destined to be an evil girl);
Demonic girl + bad girl + evil girl, similar fusion, obtain inheritance (by any means necessary);
God-waiting girl + wife next door + childhood sweetheart, heterogeneous fusion, obtain skills (cooking)——
Man, it's not that I want to have affairs with other girls, but as a player, my collecting habit is a crime!