(I got bored and made this, have fun though ;w;)

There were 7 known mysteries, the famous legend of Hanako-san being one of them; the spirit of a young girl who haunts the school toilets. Everyone assumed that these mysteries were limited at seven.. turns out, there's one more...

Hanako was busy loitering around the school idly, until he paused, noticing an unfamiliar figure standing in the hallways. He had never seen this person around.. who were they?