Chotto Namaiki na Toilet no Hanako-san -Ecchi Gakuen no Obake to Ero Ero Sakusei Seikatsu | ちょっとナマイキなトイレの花子さん ～えっちぃ学園のおばけとエロエロ搾精性活～

The protagonist, a teacher at a small school, is approached by a gossipy female student who brings him a story.

"Hey, hey? Do you know about the toilet ghost, Hanako-san?" "Actually, this story isn't just a rumor, it seems to be true. I heard that Hanako-san has appeared in this school recently."

The protagonist, dismissing it as an urban legend, is met with the girl's indignation.

He finishes his day's work and looks at the clock, only to find that it's already dark outside. After quickly checking the premises, he's about to leave when he hears a girl's voice.