Maishuu Suiyou, Danshi Toilet de Matteite

The school's bathroom has become a source of relief for Ikuto Masukawa, and not just in the regular way. Ever since his first year in high school, Ikuto has been using the school’s bathroom every Wednesday, after school hours, to do some after dark activities. He always makes sure he is alone before he enters his stall... So HOW did he not notice his classmate Hijiri Kakurai in the same bathroom until AFTER he had finished?

Ikuto, always surrounded by friends, worries that Kakurai will spill his little secret. But not only is Ikuto reassured that Kakurai has no one to spill his beans to, he finds out why they ran into each other on that particular Wednesday afternoon...

(Source: Fantasista Inc.)