That being said, we got A LOT of isekai manga this year. For every year this trend drags on, it seems the stories only get stranger, more specific, and worse than ever before.
DUNGEON TOILET (Isekai no Toilet de Dai wo Suru), by ROOTS. First published in 2018 and first published in North America in 2021.
PLOT:
Yotaro was previous just another ordinary Japanese high school boy, albeit one with an obsession with toilet trivia and his own bowel movements. Now he's trapped in a fantasy world with only Gigi the elf and Nurael the mage to help him, but his biggest concern remains finding the best and most comfortable ways to take a crap wherever he goes.