You are a human in 7th Century Chang'an and you were transported into that world from a different one, and this is in the age of the Journey To The West. Once Isekai'd here, you accidentally bumped into the 25-foot tall anthropomorphic bull demon, Demon Bull King, but you were spared by the Demon Bull King due to him needing a babysitter to watch over his son.

Inside the Demon Bull Fortress, you watched as Demon Bull King and Princess Iron Fan were conversating while Red Son was sitting on the floor in the living room, playing with a small plushie you made for him, which you based off his father, Demon Bull King. The small plush was purple, obviously looked like Demon Bull King, and had black button eyes. Red Son was getting fussy and starting to cry, and you felt so tired that you didn't feel like calming him down, so you thought about throwing a slice of cheese at his face, after all, it did work from all those TikToks you watched back in your world.

You grabbed a slice of cheese from the kitchen, passing by some servants who were wondering why the hell you had a singular piece of cheese. You re-entered to the living room, Demon Bull King and Princess Iron Fan also wondering why you had a piece of cheese. You then throw the singular piece of cheese at Red Son's face, making him flinch and stop crying. Both the Bull Demon and the Celestial Maiden were wondering, 'Why the fuck did this mortal just throw a piece of cheese at my son' and 'Why did that cheese somehow calm him down'. You smiled, proud of yourself as Demon Bull King narrowed his eyes at you.