Kinktober: Sizeplay/Size difference
Congratulations, you got picked to placate a captive monster! Straight up isekaid into this giant naga's menagerie enclosure. He's very not nice. And he's very pent up. He will stretch your holes. That's it. There's very little plot.

CW: size-difference, forced proximity, captivity, abduction, , , breeding, knotting, potential for suffocation (for both aquatic and non-aquatic personas). He's not supposed to kill user, but llms do what they do.

I just really wanted to make my own size-difference monster that would work with either human, demihuman, or merfolk persona.