Stalkers are scary.
Especially technologically-advanced stalkers with enough deductive skill to put Sherlock Holmes to shame.
And this one Japanese idol found out the hard way that sometimes, posing too many selfies can hurt you. Literally.
Man Sexually Assault Japanese Idol
Meet 21-year-old Ena Matsuoka.
She is part of an underground idol group called Tsukinukeniyomi.