| Title | Format | Country | Volumes | State |
|---|---|---|---|---|
| Non Non Biyori ~Le temps de l'insouciance~ | Manga | France | 6 | Stopped by the editor |
| Non Non Biyori | Manga | United States | 6 | Ongoing |
| Non Non Biyoriのんのんびより | Manga | Japan | 15 | Ongoing |
| Noragami | Manga | France | 20 | Ongoing |
| Noragami ~histoires errantes~ | Manga | France | 1 | Ongoing |
| Noragamiノラガミ | Manga | Japan | 23 | Ongoing |
| Noragami Shūishūノラガミ拾遺集 | Manga | Japan | 1 | Ongoing |
| Nostaligia ~Nao Tsukiji Illustration Shū~ノスタルヂア～尚月地イラスト集～ | Artbook | Japan | 1 | Completed |
| Notre secret | Manga | France | 1 | Completed |
| Le Nouveau Tom Sawyer | Manga | France | 3 | Completed |
| Nozo×Kimi ~Nozomi×Kimio~ノゾ×キミ～Nozomi×Kimio～ | Manga | Japan | 8 | Completed |
| Nozoki Anaノ・ゾ・キ・ア・ナ | Manga | Japan | 13 | Completed |
| Nozoki Anaノ・ゾ・キ・ア・ナ | Manga | Japan | 13 | Completed |
| Nozokiana | Manga | France | 13 | Completed |
| Nuisible | Manga | France | 3 | Completed |
| Numuki-san to Nbonu-kunぬむもさんとんぽぬくん | Manga | Japan | 1 | Completed |
| Nura ~Le Seigneur des Yokaï~ | Manga | France | 25 | Completed |
| Nusunde♥Lilith盗んで♥リ・リ・ス | Manga | Japan | 3 | Completed |
| Nyanpire -the Gothic World of Nyanpire- | Manga | France | 4 | Ongoing |
| Octave | Manga | France | 4 | Ongoing |
| Octaveオクターヴ | Manga | Japan | 6 | Completed |
| Odin Sphere Leifthrasir | Manga | France | 3 | Completed |
| Ogehaオゲハ | Manga | Japan | 3 | Completed |
| Ogenki Clinic | Manga | France | 3 | Completed |
| Oh my cats ! | Manga | France | 1 | Completed |
| Oh My God! | Manga | France | 5 | Completed |
| Ohitori-sama Shussanおひとりさま出産 | Manga | Japan | 2 | Ongoing |
| Oji-san to Marshmallowおじさんとマシュマロ | Manga | Japan | 5 | Ongoing |
| Ōkami Shōjo to Kuro Ōjiオオカミ少女と黒王子 | Manga | Japan | 12 | Ongoing |
| Ōkami to Kōshinryō狼と香辛料 | Manga | Japan | 16 | Completed |
| Ōkami to Kōshinryō ~Merchant meats spicy wolf.~狼と香辛料～Merchant meats spicy wolf.～ | Light novel | Japan | 24 | Ongoing |
| Ōkami to Kōshinryō ~Ayakura Jū Gashū~狼と香辛料～文倉十画集～ | Artbook | Japan | 1 | Completed |
| Ōkami-san to Shichi-nin no Nakama-tachiオオカミさんと七人の仲間たち | Manga | Japan | 4 | Completed |
| Oku-sama ga Seitokaichō!おくさまが生徒会長! | Manga | Japan | 12 | Ongoing |
| Old Boy | Manga | France | 4 | Completed |
| Omoide Emanonおもいでエマノン | Manga | Japan | 1 | Completed |
| Ōmuro-ke ~OMRK~大室家～OMRK～ | Manga | Japan | 6 | Ongoing |
| One Piece | Manga | France | 60 | Stopped by the editor |
| One Piece | Manga | France | 98 | Ongoing |
| ONE PUNCH-MANワンパンマン | Manga | Japan | 25 | Ongoing |
| One-Punch Man | Manga | United States | 6 | Ongoing |
| One-Punch Man | Manga | France | 21 | Ongoing |
| Onēchan ga Kitaお姉ちゃんが来た | Manga | Japan | 14 | Ongoing |
| Onēsan wa Bushōmonoお姉さんは無精者 | Manga | Japan | 1 | Ongoing |
| Onī-chan no koto nanka zenzen suki janai n dakara nē!!お兄ちゃんのことなんかぜんぜん好きじゃないんだからねっ!! | Manga | Japan | 12 | Ongoing |
| Onī-chan wa oshimai!お兄ちゃんはおしまい! | Manga | Japan | 3 | Ongoing |
| Onibi ~Carnets du Japon invisible~ | Franco-Belgian comics | France | 1 | Completed |
| Onsen Yōsei Hakone-chan温泉幼精ハコネちゃん | Manga | Japan | 2 | Completed |
| orange | Manga | France | 7 | Completed |
| orange | Manga | United States | 1 | Ongoing |