| Otokogirai na Bijin Shimai wo Namae mo Tsugezuni Tasuketara Ittaidounaru | Light Novel | japanese | 3.2 |
| Otome Game Mob Villain (WN) | Web Novel | japanese | 3.3 |
| Otome Game Rokkushuume, Automode ga Kiremashita | Web Novel | japanese | 4.0 |
| Otome Game ni Tensei Shita ga, Watashi wa Akuyaku ni Nari Sugita | Web Novel | japanese | 4.5 |
| Otome Game no Akuyaku Reijou o Tanoshimitai! | Web Novel | japanese | 3.5 |
| Otome Game no Heroine de Saikyou Survival (LN) | Light Novel | japanese | 4.5 |
| Otome Game no Heroine de Saikyou Survival (WN) | Web Novel | japanese | 4.2 |
| Otome Gēmu no Akuyaku Demonai Reijō wa Fianse o Hitasura Aisuru | Web Novel | japanese | 4.0 |
| Otonari no Tenshi-sama ni Itsu no Ma ni ka Dame Ningen ni Sareteita Ken (LN) | Light Novel | japanese | 4.6 |
| Otonari no Tenshi-sama ni Itsu no Ma ni ka Dame Ningen ni Sareteita Ken (WN) | Web Novel | japanese | 4.5 |
| Ototsukai wa Shi to Odoru | Web Novel | japanese | 4.2 |
| Otouto wo Suki ni Narimashita | Web Novel | japanese | 3.7 |
| Otto Von Heidegger Is Game-Brained | Web Novel | japanese | 2.4 |
| Oukoku e Tsuzuku Michi | Web Novel | japanese | 4.1 |
| Our Binding Love: My Gentle Tyrant | Web Novel | chinese | 4.0 |
| Our Classmates Don’t Know We’re Having S*x In Your Room | Web Novel | japanese | 3.3 |
| Our Cloudy | Web Novel | chinese | 4.5 |
| Our Dating Story: The Experienced You and The Inexperienced Me | Light Novel | japanese | 3.7 |
| Our Days of Youth, Beautiful as a Poem | Web Novel | chinese | 4.1 |
| Our Entire Family Has Secrets [Transmigrated] | Web Novel | chinese | 4.2 |
| Our Generation | Web Novel | chinese | 3.8 |
| Our Glamorous Time | Web Novel | chinese | 4.4 |
| Our Guest House Is Operating As Usual! | Web Novel | korean | 4.0 |
| Our House Pet | Published Novel | korean | 4.4 |
| Our Incomplete Love | Light Novel | japanese | 3.9 |
| Our Kids Couldn’t Have Done That | Web Novel | korean | 3.2 |
| Our Love, A Public Service | Web Novel | chinese | 4.1 |
| Our Second Master | Web Novel | chinese | 4.8 |
| Our Story | Web Novel | chinese | 3.1 |
| Our Story of How, on the Day of Our High School Entrance Ceremony, Our Childhood Sweetheart Dumped Us Because They Had Met Their Soulmate | Web Novel | japanese | 3.4 |
| Our Tyrant Became Young | Web Novel | korean | 4.1 |
| Ouroboros Record ~Circus of Oubeniel~ | Web Novel | japanese | 4.5 |
| Out Of Control Mark | Web Novel | chinese | 4.0 |
| Out of the Way, I’m About to Speak | Web Novel | chinese | 3.7 |
| Outaishihi ni Nante Naritakunai!! | Web Novel | japanese | 3.9 |
| Outbreak Company | Light Novel | japanese | 4.3 |
| Outcast Loser Becomes the Host of a Calamity | Web Novel | korean | 4.1 |
| Outcast Magician and the Power of Heretics | Web Novel | japanese | 3.0 |
| Outdoor Shop in Another World: Opening in the Adventurers’ Starting Town! | Web Novel | japanese | 3.8 |
| Outer World Story: Basilisk of Ice Sculpture | Web Novel | japanese | 3.6 |
| Outer World Story: Pumpkin Sorcerer | Web Novel | japanese | 2.9 |
| Outer World Story: The Black Mist that Devours | Web Novel | japanese | 3.5 |
| Outlier Skill [Storage], Proficiency Level 9999 – The Strongest Cheat Awakened After 60 Years of Hard Work | Web Novel | japanese | 3.0 |
| Outrageous | Web Novel | chinese | 4.6 |
| Outrageous! Starting as the Elf King | Web Novel | chinese | 3.2 |
| Outside the Law | Web Novel | chinese | 4.3 |
| Outsiders are Scary | Web Novel | korean | 3.6 |
| Over The Infinite | Web Novel | japanese | 3.5 |
| Overbearing City Inspector Fell In Love With Me | Web Novel | chinese | 3.5 |
| Overbearing Tyrant | Web Novel | korean | 3.2 |