Seinen Manga

Comedy , Seinen Status: Completed Odoru Keikan Chapter 7

Drama , Seinen Status: Completed Odyssey Chapter 10

Action , Adventure , Drama , Horror , Martial arts ,... Status: Completed Of The Dead Chapter 8

Action , Drama , Horror , Mystery , Seinen Status: Ongoing Off Village: Daisanbou Okabe Chapter 1

Action , Drama , Horror , Mystery , Psychological ,... Status: Ongoing Offal Island Chapter 30

Action , Drama , Adventure , Seinen Status: Completed Offered Chapter 43

Comedy , One shot , Seinen , Sports Status: Completed Offside Trap Chapter 1

Action , Horror , Mature , Seinen , Supernatural Status: Completed Ogre Hunting Chapter 4

Comedy , Slice of Life , Seinen Status: Ongoing Oh, Our General Myao Chapter 48

Seinen Status: Completed Oh! Men! Chapter 26.5

Romance , Seinen , Slice of life Status: Ongoing Ohayou Toka Oyasumi Toka Chapter 30

Romance , Drama , Comedy , Seinen Status: Completed Ohikkoshi Chapter 0.1

Adventure , Seinen Status: Completed Ohimesama Navigation Chapter 1

Drama , Seinen , Slice of life Status: Ongoing Oishinbo Chapter 102

Action , Adventure , Comedy , Cooking , Doujinshi ,... Status: Ongoing Oita Ga Sugiru Wa Koneko-Chan Chapter 5

Romance , School Life , Comedy , Slice of Life , Seinen Status: Completed Ojojojo Chapter 58

Comedy , Mature , Romance , Seinen Status: Ongoing Ojousama Wa Nigedashita Chapter 18

Action , Comedy , Drama , Fantasy , Harem ,... Status: Ongoing Ojyo With Seven Dogs Chapter 5

Comedy , School life , Seinen , Slice of life Status: Ongoing Okaa-San (10-Sai) To Boku Chapter 18

Romance , Drama , Comedy , Seinen , Gender Bender Status: Completed Okama Report Chapter 61

Fantasy , Romance , Drama , Supernatural , Adventure ,... Status: Completed Okami to Koshinryo Chapter 16

Seinen , Slice of life Status: Ongoing Okan Chapter 7

Romance , School life , Seinen , Slice of life Status: Ongoing Okashiratsuki Chapter 24

Ecchi , Harem , Romance , Comedy , Seinen Status: Completed Okasu Bekarazu!! Junketsu Tokku! Chapter 29

Action , Adventure , Fantasy , Harem , Horror ,... Status: Ongoing Oki No Doku Desu Ga, Bouken No Sho Wa Maou No Mono Ni Narimashita. Chapter 1

Comedy , Romance , Seinen , Slice of life Status: Ongoing Okite Kudasai, Kusakabe-San Chapter 11.5

Supernatural , Seinen , Horror Status: Completed Okitenemuru Chapter 73

Comedy , Romance , School life , Seinen , Slice of life ,... Status: Ongoing Okitsune Gal Katabami-San Chapter 11

Ecchi , School Life , Supernatural , Comedy , Yuri ,... Status: Completed Okitsune-sama de Chu Chapter 30

Ecchi , Romance , School Life , Comedy , Seinen Status: Completed Okusama wa Joshi Kousei Chapter 143

Comedy , Romance , Seinen Status: Ongoing Okusama Wa Shougakusei Chapter 3

Ecchi , Comedy , Slice of Life , Seinen Status: Completed Okusan Chapter 154

Drama , Mystery , Psychological , Seinen Status: Completed Old Boy Chapter 80

Comedy , Romance , Seinen Status: Ongoing Older Elite Knight Is Cute Only In Front Of Me Chapter 38.3

Action , Fantasy , Tragedy , Seinen , Manhua ,... Status: Completed Oldman Chapter 22

Cooking , Drama , Seinen , Slice of life Status: Ongoing Oli Oli Soup Chapter 72

Seinen , Sports Status: Ongoing Olympic Circles Chapter 12

Action , Horror , Seinen , Supernatural , Erotica Status: Ongoing Omega (Matsumori Tadashi) Chapter 1

Action , Comedy , Seinen Status: Completed Omega Complex Chapter 13

Action , Adventure , Drama , Psychological , Seinen ,... Status: Ongoing Omega Tribe Chapter 7

Action , Drama , Seinen Status: Completed Omega Tribe Kingdom Chapter 1

Action , Drama , Fantasy , Romance , Seinen Status: Ongoing Omen Chapter 1