The Anime Lad
Yotsuya keeps his classmates at a distance until a game-like alternate world removes that option. Shindo and Hakozaki arrived earlier and now share a dangerous quest with him. His detached logic may help the party. His willingness to treat their lives as variables creates a separate administrative concern.
Super Eyepatch Fox
A detached middle schooler is pulled into a game-like fantasy realm where two classmates already face a dangerous quest. Monsters and hostile enemies make survival a group problem, while Yotsuya approaches every choice as a calculation. The party needs his logic without becoming pieces on his board.
Gigguku
Yotsuya lands in a fantasy quest with two classmates already fighting to survive, and he starts calculating before the shock has time to settle! That cold focus can be useful when monsters attack. It also makes every party decision tense, because his idea of the logical move may include people.
Father's Basement
The alternate world and game rules are familiar scaffolding, while Yotsuya's coldness can read as adolescent performance. The useful tension is already present in the premise. Two classmates need him to help protect the party, but his detached calculations may treat their lives as another resource to manage.