| Kimi ga Ita Kisetsu ~Primary~ | 1999-07-23 | Scenario | Hibiki Hatto | Marika and Akira's routes |
| White Angel | 2000-01-28 | Scenario | Hibiki Hatto | |
| White Angel | 2000-01-28 | Director | Hibiki Hatto | |
| White Angel | 2000-01-28 | Staff | Hibiki Hatto | OP "White Angel", ED "Hand to Hand" lyrics |
| Tenshi no Kobako | 2000-05-26 | Scenario | Hatto | |
| Bluelight Magic | 2000-06-23 | Scenario | Hatto | |
| Custom Sex Doll | 2000-11-17 | Scenario | Hatto | |
| Lagnalock | 2001-10-12 | Scenario | Hatto | |
| Sacrifice ~Seifuku Gari~ | 2001-12-28 | Scenario | Hibiki Hatto | |
| Dokidoki Sister Paradise | 2003-02-14 | Scenario | Hatto | |
| Kurenai | 2003-11-14 | Scenario | Hatto | |
| Dokidoki Sister Paradise 2 | 2005-02-25 | Scenario | Hatto | |