Miserea
Miserea is the Third Omni Water Lord, one of the eight Omni Lords originally from Dungeon World. When he couldn't find a way back to his home dimension, he settled on the next best thing: living among humans under the assumed name Kiri Hyoryu.
To pull this off, Miserea basically rewrote his own memories over and over again across centuries, erasing and reshaping his past to stay inconspicuous in human society. It's a pretty extreme method of blending in. His buddy monster Stein Blade Joker, who serves as the Aide of the Water Lord, stuck with him through all of it as both companion and guide—basically keeping Miserea grounded whenever he needed it.
Content compiled by AnimeList.moe from publicly available sources.
