Houkago wa Gin no Shirabe [NTSC-J] [SLPM-66914]
Houkago wa Gin no Shirabe ~Kyuukyuujo Ritsuryou~ (放課後は白銀の調べ～急急如律令～). Kaname is from a monster buster family and she is a monster buster as well. One day, she is offered to investigate a private high school since various mysterious accidents happen there. She accepts it, but there is one big problem. Actually, it is a boys' high school. She disguises herself as a boy and somehow gets along with her classmates. Yes, case closed.... No! She needs to solve the mystery!