| App Type | demo |
| Full Game | Sex Trainer's Diary: Hidden Kink |
| Release Date | Unknown |
| Details Last Modified | May 18, 2026 (4 months ago) |
| Developer | 老二打鐵舖, 072 Localize |
| Publisher | 072 Project X, Oπ |
| Supported Systems | Windows |
| Price | Free |
| Required Age | 0+ |
| Support Email | opi.publishing@gmail.com |
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This is a stealth-based adult simulation game where you follow the mysterious woman, Mio, and interact with her to uncover her secrets. As a professional trainer, you will fulfill Mio's unique desires while gradually revealing the hidden story between the two of you.