| Name | Total | ... |
|---|---|---|
| Otokonoko to Iku! Shuugaku Ryokou | 2 | GO |
| Otome Dori | 2 | GO |
| Otome Drops | 2 | GO |
| Otome Kuzushi | Otome Slave | 4 | GO |
| Otomehime | 5 | GO |
| Otona Fate to Kodomo Nanoha | 2 | GO |
| Otona No Dagashi | 4 | GO |
| Otona OS 2/18 | 1 | GO |
| Otona OS 2/19 | 1 | GO |
| Otonano Do-wa | 1 | GO |
| Otonano Omochiya | 1 | GO |
| otonari no moto Sakura-san | 3 | GO |
| Otonari no Nazrin | 2 | GO |
| O-tonari. | 4 | GO |
| Otonari-san | 2 | GO |
| Otonari-san to Korette | 3 | GO |
| Otosareta Bishimai ~Douka Sonoko Dake wa Tasukete Kudasai~ | 2 | GO |
| Otouto no Musume | 3 | GO |
| Ouhi-sama Hacchake asobasu | 2 | GO |
| Our Beloved Prince | 2 | GO |
| Ouran Koukou Host-bu Fan Club | 3 | GO |
| Outdoor Soap Play | 4 | GO |
| Outstanding! | 2 | GO |
| OVER CRASH | 2 | GO |
| Over Flow Virus | 2 | GO |
| Overage Temptation | 2 | GO |
| OVERTIME!! OVERWATCH FANBOOK | 2 | GO |
| Oya ni Naisho | 0 | GO |
| Oyako Gui | 6 | GO |
| Oyako Rankan The Animation | 1 | GO |
| Oyasumi Sex | 4 | GO |
| Oyomesama Honey Days | 2 | GO |
| P.O.M | 2 | GO |
| P3;TRIO | 2 | GO |
| P5 Harem | 2 | GO |
| Pachimonogatari | 14 | GO |