Is It Wrong to Seek a Meeting in a Death Game?

[I am a god from another world. You are one who has been transported here.]

[In this cruel world, I will grant you the power to survive.]

You get stronger just by making contracts with girls? What a deal!

Xingling Xiu was overjoyed. For the first time, he had a cheat, and he even had waifus from the world of anime come to life. Two sources of joy... Wait, no. A death game had arrived.

There was no way to run away. The only way to keep living was to grow stronger, by making contracts with girls.

"Do you want to control your own destiny? Then hurry up and make a contract with me!"

"So what's the price?"

"It's free!"

"No way. Free is always the most expensive..."

Xingling Xiu suddenly realized that, at some point, the contract girls had started looking at him a little differently.

[Appeared so far: Miyamizu Mitsuha, Sakurajima Mai, Bocchi, Kyukuu Yoa, Hikami Miyuna, Kyouko, Kyouko Shiko, Kikyo, Yukinoshita Yukino, Kirisu Mafuyu, Anna Nishikinomiya, Iino Miko, Shinomiya Kaguya, Elysia...]

[Not yet appeared: Shana, Matou Sakura, Tohsaka Rin, Tamamo-no-Mae, Artoria, Nero, Violet Evergarden, YoRHa No. 2 Type B...]

P.S. Cautious protagonist, satisfying power fantasy, not a self-sacrificing saint, utterly ruthless, rivers of blood.