Marvel: The Symbiote's Host

Imagine an isekai drop into the MCU: no quests, no guidebook, just New York and a snarky alien roommate in your head. Jiss is the guy who survives by blending in: odd jobs by day, park-bench philosopher by night, and a walking "do not engage" sign whenever trouble smells. His secret? Toxin, a symbiote that turns fear into claws and anxiety into improv comedy, constantly heckling, advising, and occasionally saving his skin.