華麗なる探偵アリス&ペンギン ゴースト・キャッスル (小学館ジュニア文庫 な 2-15)

[DeepL Translation - needs review] Volume 1: Alice & Penguin solve the mystery in spectacular fashion! Alice Yuboshi is a shy girl. When her adventurous father tells her that he can't take her on this trip because it's too dangerous, she is sent to the Penguin Detective Agency in the hanging garden of a 13th-floor building!　The detective there is, of course, a penguin! ...... Eh! Penguin!　Alice is given a mysterious ring by detective Shisho (Penguin) that allows her to enter the land of mirr...