>>96948613
Fish out of water story, the straight man (as in fucking comedy not gender dynamics you uncouth fucking 'uckin' fuck stain on society fuck) explores a world that runs by a different set of rules. he either discovers a means by which his rules are advantageous or that their rules are. Instantly, it raises questions of perhaps there is a middle-ground, perhaps they can co-exist?
My ass would instantly roll up a character (either playable, semi-playable, or npc) that completes the comedy duo and reflects the rules of the world. This character could become their love interest (meet-cute), their corrupting foil (angel meets devil), they are unfortunate anti-matter (the roommates), or it's a jealous fascination (eternal rivals). They come together because of one shared element of the world. This might just be proximity, but would be better if it was a rule of the world that raises another question, "are there other acceptable elements of coexistence".
I'm assuming warhammer and gender (yes, you uncouth fucking 'uckin' fuck stain on society fuck), so Krieger footsoldier boy meet cute with a Salaanesh cultist girl fighting against tyranid parasites. He likes blasting his way through the tides of darkness and corruption into dust, while she enjoys boinking and converting them into useful play things.