Where Is the Elf Teacher's Toilet?

Eruru Shikkoshi is an innocent elf from an alternate fantasy realm who takes up a trainee teaching position at an ordinary all-boys Japanese high school. While she strives to be an inspiring educator and role model for her boisterous students, she faces a secret crisis born of rigid forest customs: elves can only relieve themselves in pure, untouched natural settings. Completely overwhelmed by modern indoor restrooms and ceramic plumbing, Eruru repeatedly finds herself in desperate, blushing predicaments across the school campus. Whenever her bladder reaches its absolute limit, her miraculous fairy constitution causes lush wildflowers to blossom across the school grounds.