Constellation:

Character:

A blue-haired girl estimated to be around the age of a middle school student, she is characterized as being highly intelligent and possessing an excellent memory. She acts very polite in public, and shows an extreme interest in puzzles and mysteries. In truth, she is ruthless and cunning, and only solves mysteries to boast her superiority towards those who execute them. She does, however, possess a serious inferiority complex, and is prone to breaking down emotionally whenever things do not go her way.

Source from Wikipeida