>>3140709I'm not OP, but I looked this up just now and read the first chapter. The thread title is what the manga is called.
"At Kamome Academy, rumors abound about the school's Seven Mysteries, one of which is Hanako-san. Said to occupy the third stall of the third floor girls' bathroom in the old school building, Hanako-san grants any wish when summoned. Nene Yashiro, an occult-loving high school girl who dreams of romance, ventures into this haunted bathroom... but the Hanako-san she meets there is nothing like she imagined! Kamome Academy's Hanako-san... is a boy!"
So yeah it's basically about a cute ghost boy and school girl.