| Title | Rating | Synopsis |
|---|---|---|
| おお振り (Japanese abbreviation) | Watch | See Ookiku Furikabutte |
| おくさまが生徒会長！ | Unevaluated | See Okusama ga Seitokaichou! |
| おくさまは女子高生 (Japanese) | Watch | See Okusama wa Joshi Kousei |
| おしえて！ギャル子ちゃん | Unevaluated | See Oshiete! Galko-chan |
| おとぎストーリー 天使のしっぽ | Watch | See Tenshi no Shippo |
| おにいさまへ… | Rent | See Oniisama E... |
| おねがい☆ツインズ | Rent | See Onegai Twins |
| おねがい☆ティーチャー (OAV) | Watch | See Onegai Teacher (OAV) |
| おまもりひまり (Japanese) | Rent | See Omamori Himari |
| おれは鉄兵 | Unevaluated | See Ore wa Teppei |
| お隣の天使様にいつの間にか駄目人間にされていた件 | Unevaluated | See Otonari no Tenshi-sama ni Itsu no Ma ni ka Dame Ningen ni Sareteita Ken |
| かのこん (Japanese) | Watch | See Kanokon |
| かりん | Rent | See Karin |
| かんなぎ (Japanese) | Rent | See Kannagi |
| かんなぎ (OVA) | Watch | See Kannagi (OVA) |
High School: (Story/Location) Self-explanatory. High School (grades 10-12) should play a major role in the title. A typical High School series will include a Sports Festival, a Cultural Festival, a School Trip, and the decision about attending college vs. getting a job. Related categories: "Elementary School", "Middle School", "College".
