Titles that are dismal or gloomy in nature qualify for the dark category.
| Title | Rating | Synopsis |
|---|---|---|
| S | ||
| Saikano - OVA | Rent | See Saishuuheiki Kanojo - Another Love Song |
 Saishuuheiki Kanojo - Another Love Song |
Rent | This OVA retells parts of the Saishu Heiki Kanojo TV series from the perspective of Lt. Mizuki (Chise's superior officer and fellow Ultimate Weapon), thus giving the audience more insight into the events behind the scenes. |
| Saishuuheiki Kanojo OVA | Rent | See Saishuuheiki Kanojo - Another Love Song |
| 最終兵器彼女Another Love Song | Rent | See Saishuuheiki Kanojo - Another Love Song |
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