Member of Orpheus Order. She is the most childlish of the Orpheus Order, and Mizerka's sister.

The second season of Phi Brain: Kami no Puzzle.
 
The puzzles get tougher and even more deadly as Kaito Daimon continues his battle against the power hungry Givers of the POG. And with one team member already switching sides, will Kaito have what it takes to keep solving the deadly puzzle traps put before him and reach the fabled Puzzle of God? More importantly, will he be able to solve the puzzles AND maintain his sanity? 
(Source: Sentai Filmworks)

"Are puzzles really necessary in this world?"

In order to restore Jin's memory, Kaito and his friends go on a puzzle-viewing journey to England. As they're walking through the underground maze beneath the church, where young Kaito and Rook first met Jin, a mysterious girl appears in front of them.

Jin calls the girl by the name "Raetsel". It seems they know each other. However, she suddenly disappears and takes Jin with her. What's more, the traps in the underground maze are activated and start coming after Kaito and his friends.

(Source: www9.nhk.or.jp)

Melancholy