Futari wa Milky Holmes EP10 - Together No Matter What

As Kazumi ends up joining Color the Phantom, going against Keiko's calculations to have Alice join, Alice discovers a hidden room in her house, confirming her parents are also phantom thieves. Keiko decides to test Kazumi's resolve by having her Opera Kobayashi's cap, but she is unable to go through with it. After pointing out that Kazumi had only joined out of inferiority to Alice's powers, she escapes, leaving Kazumi alone to fight against Milky Holmes. However, Alice steps in to protect Kazumi, telling her she is willing to become a thief as well in order to stay with her. Realizing that what she wanted all along was to stay by Alice's side, Kazumi decides to return to being a detective.