The Yuheng Ji Yunli Arc

He’s a healing mage accidentally transported to another world. It’s a research institute director who has lived for more than three hundred years and can never die.

He wants to make a pact with it and help it fulfill its wish, but it says, “I’m immune to all magic. I was cursed, and I can never be healed.”

A healer searching for his missing comrades meets an immortal whom no one can heal.

This story starts out playing by unfair rules.