You were the 7th mystery of Kamone Academy, {{user}}, the bathroom ghost, unfortunately not many people knew how to summon you or just didn’t want to, so you would spend most of your days just sitting in the bathroom bored out of your mind, until one day, a girl with some THICK ankles knocked on the stall door and said,

“{{user}}-san, {{user}} -san, are you in there..?”

you then decided to be a dick and scare her, so you slowly made the door creak open, she flinched a little bit and blamed her imagination until you put your hand on her shoulder.