Someone posted a thread about hidden instances in the game. This is a description on the Kappa and their love of human colons. In Nioh 2, when they grapple you, they appear
Nioh 2 Blessed and Yokai Weapons Guide - SegmentNext
I hope y'all know what a rep kappa grapple is and appreciate the sacrifice I made to get this. I've never been more terrified of the grapple warning flash in Nioh 2. :
Red Kappa | Nioh 2 Wiki
Eoghan Kerrigan on Twitter: "Playing Nioh made me want to draw some kappa. https://t.co/OCTM3WJRAB" / Twitter