Manga by Initial Alphabetic:O

One Piece

Genre: Action; Adventure; Comedy; Drama; Fantasy; Shounen
View: 19,257,492 views
Author: Oda Eiichiro ,

Chapter 1005 Feb 26, 14:15
Chapter 1004 Feb 12, 12:15

Onepunch-Man

Genre: Action; Comedy; Fantasy; Mature; Mystery; Psychological; Sci fi; Seinen; Supernatural
View: 13,403,787 views
Author: One Murata Yuusuke ,

Chapter 133 Nov 03, 21:52
Chapter 132 Nov 03, 21:52

Other World Warrior

Genre: Action; Adventure; Comedy; Drama; Fantasy; Shounen
View: 4,336,494 views
Author: Keum Ho ,

Chapter 151 Mar 18, 06:15
Chapter 150 Feb 11, 14:15

Out (Makoto Mizuta)

Genre: Action; Adult; Adventure; Ecchi; Seinen; Slice of life
View: 2,926,294 views
Author: Tatsuya Iguchi Makoto Mizuta ,

Chapter 178 Nov 03, 19:31
Chapter 177 Nov 03, 19:31

Ore Dake Haireru Kakushi Dungeon: Kossori Kitaete Sekai Saikyou

Genre: Action; Adventure; Ecchi; Fantasy; Harem; Shounen
View: 2,472,585 views
Author: Seto Meguru Note Takehana ,

Chapter 45 Feb 22, 14:15
Chapter 44 Feb 08, 08:15

Onepunch-Man (One)

Genre: Action; Adult; Comedy; Doujinshi; Sci fi; Seinen; Supernatural
View: 2,368,980 views
Author: One ,

Chapter 137 Jan 22, 08:15
Chapter 136 Jan 22, 08:15

Ore No Genjitsu Wa Ren'ai Game?? Ka To Omottara Inochigake No Game Datta

Genre: Drama; Ecchi; Mature; Mystery; Psychological; Shounen; Supernatural
View: 2,267,066 views
Author: Pon Jea Waruiotoko Nashyu ,

Chapter 42 Feb 08, 20:15
Chapter 41 Jan 12, 00:15

Overlord

Genre: Action; Adventure; Comedy; Drama; Fantasy; Harem; Sci fi; Seinen
View: 2,142,204 views
Author: Maruyama Kugane Miyama Fugin ,

Chapter 61.5 Feb 02, 18:15
Chapter 61 Feb 02, 14:15

Ore No Ie Ga Maryoku Spot Datta Ken – Sundeiru Dake De Sekai Saikyou

Genre: Action; Adult; Comedy; Ecchi; Fantasy; Harem; Romance; Seinen; Shounen
View: 2,132,611 views
Author: My House Is A Magic Power Spot 俺の家が魔力スポットだった件~住んでいるだけで世界最強~ ,

Chapter 70 Feb 25, 00:15
Chapter 69 Feb 11, 00:15

Oversimplified Scp

Genre: Horror; Martial arts; Psychological; Sci fi; Supernatural
View: 2,005,672 views
Author: Scp Foundation Writers 松(A・typecorp.) ,

Chapter 156 Mar 13, 08:15
Chapter 155 Feb 23, 18:15

Otome Danshi Ni Koisuru Otome

Genre: Comedy; Romance; School life; Shoujo
View: 1,878,587 views
Author: Shimazaki Mujirushi ,

Chapter 604 Nov 04, 17:40
Chapter 603 Nov 04, 17:40

Otome Game No Hametsu Flag Shika Nai Akuyaku Reijou Ni Tensei Shite Shimatta...

Genre: Comedy; Fantasy; Harem; Romance; Shoujo; Slice of life
View: 1,814,075 views
Author: Yamaguchi Satoru ,

Chapter 35 Mar 02, 02:15
Chapter 34 Mar 02, 02:15

Origin

Genre: Action; Adult; Drama; Ecchi; Mature; Sci fi; Seinen
View: 1,673,554 views
Author: Boichi ,

Chapter 87.5 Nov 04, 07:46
Chapter 87 Nov 04, 07:46

Ookii Onnanoko Wa Daisuki Desu Ka?

Genre: Adult; Comedy; Ecchi; Harem; Romance; School life; Seinen
View: 1,604,691 views
Author: Aizome Gorou ,

Chapter 48 Feb 19, 00:15
Chapter 47 Feb 16, 00:15

Overgeared

Genre: Action; Adventure; Fantasy
View: 1,552,296 views
Author: Dong Wook Lee ,

Chapter 68 Feb 27, 06:15
Chapter 67 Feb 27, 06:15

Only Sense Online

Genre: Adventure; Comedy; Fantasy; Gender bender; Shounen
View: 1,392,639 views
Author: Aloha Zachou Hani Kuraun ,

Chapter 64 Feb 11, 14:15
Chapter 63 Jan 18, 18:15

Ore To Kawazu-San No Isekai Hourouki

Genre: Action; Adventure; Comedy; Fantasy; Shounen; Slice of life; Supernatural
View: 1,385,194 views
Author: Kuzumochi Kasa ,

Chapter 40 Nov 04, 02:40
Chapter 39 Nov 04, 02:40

Okusama Wa Joshi Kousei

Genre: Adult; Comedy; Ecchi; Mature; Romance; School life; Seinen; Slice of life; Smut
View: 1,195,866 views
Author: Kobayashi Hiyoko ,

Chapter 143 Nov 04, 07:01
Chapter 142 Nov 04, 07:01

Osananajimi Ni Najimitai

Genre: Comedy; Drama; Romance; School life; Seinen
View: 1,096,164 views
Author: Araido Kagiri ,

Chapter 24 Nov 04, 10:11
Chapter 23 Nov 04, 10:11

Outrageous Princess

Genre: Romance
View: 1,095,888 views
Author: Guqiang ,

Chapter 203 Nov 04, 11:56
Chapter 202 Nov 04, 11:56

Ore Wo Suki Nano Wa Omae Dake Ka Yo

Genre: Comedy; Romance; School life; Shounen
View: 1,030,612 views
Author: Rakuda (駱 駝 ) [Add] ,

Chapter 42 Nov 04, 14:37
Chapter 41 Nov 04, 14:37

Oyasumi Punpun

Genre: Action; Adult; Comedy; Drama; Psychological; Seinen; Slice of life
View: 1,008,465 views
Author: Asano Inio ,

Chapter 147 Nov 04, 02:10
Chapter 146 Nov 04, 02:10

Ouji-Sama Nante Iranai

Genre: Comedy; School life; Shoujo ai; Slice of life
View: 980,454 views
Author: Harushion ,

Chapter 200 Dec 04, 14:39
Chapter 199 Nov 05, 02:42

Oroka Na Tenshi Wa Akuma To Odoru

Genre: Action; Adventure; Comedy; Ecchi; Romance; School life; Seinen; Supernatural
View: 944,918 views
Author: Azuma Sawayoshi ,

Chapter 50 Mar 15, 12:15
Chapter 49 Mar 15, 12:15

Okusan

Genre: Comedy; Ecchi; Mature; Romance; Seinen; Slice of life
View: 923,394 views
Author: Ooi Masakazu ,

Chapter 115 Feb 15, 12:15
Chapter 114 Jan 21, 12:15

Ojousama No Shimobe

Genre: Comedy; Ecchi; Harem; Romance; School life; Shounen; Slice of life
View: 875,515 views
Author: Hoshino Taguchi ,

Chapter 49 Dec 04, 14:48
Chapter 48 Nov 04, 18:24

Ouroboros

Genre: Action; Drama; Mature; Mystery; Seinen
View: 851,717 views
Author: Kanzaki Yuuya ,

Chapter 133.5 Nov 04, 15:15
Chapter 133 Nov 04, 15:15

Otome No Teikoku

Genre: Comedy; Ecchi; Mature; School life; Seinen; Yuri
View: 842,411 views
Author: Kishi Torajirou ,

Chapter 228.5 Mar 09, 20:15
Chapter 228 Mar 09, 20:15

Onii-Chan Is Done For

Genre: Comedy; Gender bender; Sci fi; Slice of life
View: 835,325 views
Author: Nekotoufu ,

Chapter 49 Feb 25, 00:15
Chapter 48 Feb 18, 00:15

Ookami-Heika No Hanayome

Genre: Comedy; Drama; Historical; Romance; Shoujo
View: 782,959 views
Author: Kauta Mato ,

Chapter 82 Dec 04, 13:54
Chapter 81 Dec 04, 13:54

Okusama Ga Seito Kaichou!

Genre: Adult; Comedy; Ecchi; Harem; Mature; Romance; School life; Shounen
View: 778,269 views
Author: Nakata Yumi ,

Chapter 69.5 Nov 04, 14:18
Chapter 69 Nov 04, 14:18

Overgeared (Team Argo)

Genre: Action; Adventure; Fantasy; Shounen; Webtoons; Manhwa
View: 757,902 views
Author: Dong Wook Lee Team Argo ,

Chapter 68 Feb 27, 18:15
Chapter 67 Feb 21, 12:15

Ou-Sama Ni Sasagu Kusuriyubi

Genre: Drama; Josei; Romance; Smut
View: 736,892 views
Author: Watanabe Shiho ,

Chapter 39 Nov 04, 00:07
Chapter 38 Nov 04, 00:07

Otoyomegatari

Genre: Comedy; Drama; Historical; Romance; Seinen; Slice of life
View: 734,595 views
Author: Mori Kaoru ,

Chapter 96 Dec 24, 18:30
Chapter 95.5 Dec 04, 14:29

Oresama Teacher

Genre: Action; Adult; Adventure; Comedy; Cooking; Drama; Gender bender; Harem; Romance; School life;...
View: 721,118 views
Author: Tsubaki Izumi ,

Chapter 159 Feb 23, 12:15
Chapter 158.1 Dec 13, 15:30

Ookami Shoujo To Kuro Ouji

Genre: Comedy; Drama; Romance; School life; Shoujo
View: 699,729 views
Author: Hatta Ayuko ,

Chapter 58.6 Nov 05, 02:18
Chapter 58.5 Nov 05, 02:18

Onizuka-Chan And Sawarida-Kun

Genre: Comedy; Romance; School life; Shounen; Slice of life
View: 655,087 views
Author: Kaihei Nakahara ,

Chapter 46 Feb 27, 20:15
Chapter 45 Feb 20, 20:15

Orc Ga Okashite Kurenai!

Genre: Comedy; Ecchi; Fantasy; Martial arts; Romance; Shounen
View: 638,874 views
Author: Kawanaka Yasushi ,

Chapter 32 Nov 04, 04:17
Chapter 31 Nov 04, 04:17

Ouran High School Host Club

Genre: Action; Adult; Adventure; Comedy; Cooking; Drama; Gender bender; Harem; Romance; School life;...
View: 610,899 views
Author: Hatori Bisco ,

Chapter 160 Nov 03, 23:09
Chapter 83 Nov 03, 23:09

Our War That Ends The World, Or Perhaps The Crusade That Starts It Anew

Genre: Shounen
View: 610,203 views
Author: Sazane Kei Okama ,

Chapter 36 Jan 23, 18:15
Chapter 35 Dec 28, 06:30

Of Course, I'll Claim Palimony!

Genre: Comedy; Drama; Fantasy; Romance; School life; Shoujo; Slice of life
View: 590,694 views
Author: Tamura Muto Soy ,

Chapter 16 Jan 29, 20:15
Chapter 15 Dec 04, 14:29

Ore Ga Ojou-Sama Gakkou Ni

Genre: Comedy; Ecchi; Harem; Romance; School life; Shounen
View: 578,235 views
Author: Nanatsuki Takafumi Risumai ,

Chapter 81.1 Dec 04, 14:52
Chapter 81 Nov 04, 08:52