Seinen

Once I Possess The System I Will Become The Creator

One Day, Suddenly, Seoul Is

One More Age

One-Day BDSM Workshop

One-Punch Man

Onecha.

Onee-san is Invading!?

Ookii Muki Muki Chiisai Muchi Muchi

Ookii Onnanoko wa Daisuki Desu ka?

Orc Hero Story – Discovery Chronicles

Ore Dake Yoyuu no Isekai Survival ~Tenisaki no Mujintou de Tanoshimu Harem Life~

Ore no Genjitsu wa Ren’ai Game?? ka to Omottara Inochigake no Game datta

Ore no Kingdom

Ore no vaccine dake ga zonbi-ka shita sekai o sukueru

Oretama

Ori no Naka

Osabori Jouzuna Koumukai-san wa Ore wo Nogasanai!!

Osananajimi to Kanojo to

Osananajimi wa Yami Ochi Seijo!

Otome Sensou

Otsubone Reijou to Shiyuka no Kisetsu

Overpower Your Enemies by the Law

Pansuto

Paradise on Earth

Parallel City

Parallel Paradise

Paranoid Mage

Peak (IM Gang-hyeok)