[Hirojuu Renshuuchou] A Certain Day in Chibimokou's Life

Here's a Touhou doujin that follows the simple yet brilliant concept of a futa-loli going around sticking her disproportionate thing into pretty much everything that moves.

A seemingly insatiable Mokou follows Keine around during her workday and keeps pestering her for sex. She eventually gets her way, but that doesn't stop her from doing it with a little human girl when the opportunity is given. However, come nightfall, Keine enters her hakutaku form, and the roles are reversed.

DF | RG

I'd imagine class attendance in Gensoukyou is pretty high