Synopsis

One day, a love letter shows up in Keiki Kiryuu's club room, sweet, right? Except it also comes with a pair of white panties. No name, no explanation: just underwear and a confession. Now Keiki has to figure out which girl left them, and his investigation into his so-called 'Cinderella' goes sideways almost immediately. Every suspect, his calm senior Sayuki, the prim underclassman Yuika, his classmate Mao. turns out to have her own very specific and very unexpected fetish that she's not great at hiding. What starts as a romantic mystery quickly becomes Keiki stumbling from one awkward revelation to the next, trying to keep his composure while the girls around him absolutely do not. This 12-episode TV series from 2019 (studio Geek Toys) is adapted from a light novel, and it leans hard into the comedy side of its ecchi premise. The fetish stuff is played for laughs rather than anything too serious. it's more absurd than raunchy. Each girl gets enough screentime that the harem setup doesn't feel like a revolving door, and the mystery of who actually left the letter gives the whole thing a throughline beyond just gags. If you liked Shimoneta for its shameless humor or got a kick out of the chaotic energy in Aho Girl, this hits a similar wavelength. Tejina-senpai fans will also recognize the vibe of a guy surrounded by girls who are endearing precisely because something is a little off about each of them. It's light, it's dumb in the best way, and it knows exactly what it is.