Search of Genres for "adventure"

No Afterlife
No Battle No Life
No Fatigue: 24-jikan Tatakaeru Otoko no Tenseitan
No Game No Life
No Game No Life: Practical War Game
No matter how you look at it, this world's magic language is Japanese.
No Need for a Core
No-Life X Life
Noble Emblem
Noble Knights
Noble Witches: 506th Joint Fighter Wing
Noise City Osaka
Nonbiri VRMOO-ki
Not a Fairy Tale
Not Sure, But It Looks Like I Got Reincarnated in Another World
Nothing to Lose
Notice That Slime, the Boss-monster ~The Lowest Slime's Dungeon Management Story~
Novice Adventurer Marle and the Slime Rin
NPC Survival Guide
Nuclear Dragon
Number One Lazy Merchant of the Beast World
Nurarihyon no Mago
Nuwu
Obtaining the Strongest Cheat
Occupation: Adventurer; Race: Various
Ochita Kuroi Yuusha no Densetsu
Ochite Kita Naga to Horobiyuku Majo no Kuni
Oda Nobuna no Yabou
Oda Nobuna no Yabou Gaiden – Jakigan Ryuu Masamune
Of Mountains and Rivers
Oh No! After Reincarnation, I Discovered That My Moms Have Severe Son-Complexes!
Ohanabatake no Maousama
Oi, Hazure Sukiru da to Omowareteita "Chiito Koodo Soosa" ga Bakemono Sugiran da ga
Okami Wa Nemuranai
Okay, Let's Become the Demon King
Okitara 20nen Nandesukedo! Akuyaku Reijo no Sono Ato no Sono Ato
Okoborehime to Entaku no Kishi
Omni Genius
Omni-Magician
Omnipotent Sage
Omniscient Reader's Viewpoint
On the Way Home I Got a Bride and Twin Daughters, Who Were Dragons
One Hundred Ways to Become a God
One Man Army
One piece Bounty System
One Piece Enhancement
one piece invincible
One Piece Shura
One Piece Talent System
One Piece – Thundergod Marine