- Online Computer Gaming
- Virtual Reality (VR)
- MMORPG
- Unrequited Love
- Mystery
- Supernatural
- Superpowers
- Demons
- Multiple Personality
- Assassins
- Cold War
- Cyborg
- Ecchi
- Fanservice
- Inner demons
- Secret Agents
- Spies
- Tragedy
- Revenge
- Mafia
- Historical
- Aircraft
- Military
- School Life
- Magical Creatures
- Monster Girls
- Amnesia
- Clones
- Espers
- Harem
- Human Experimentation
- Mages
- Wizards / Witches
- Crime Busters
- Shoujo-ai
- Fairies
- Music
- Otaku
- Imouto
- Growing Up
- Parody
- Parallel Worlds
- Conspiracy
- Corruption
- Detective
- Espionage
- Government
- Police
- Politics
- Royalty
- Social Disparity
- Augmented Reality
- Fighting
- Technology
- Future
- Lawyers
- Murder
- Alternate Dimension
- Inter-Dimensional Travel
- Samurai
- Age-Gap Relationship
- Café
- Love/Relationships
- Moe
- Magical Girl
- Magical Creatures
- Military
- War
- Life After Death
- High School
- Gunfights
- Girls With Guns
- Amnesia
- Death
- Gondolas
- Iyashikei
- Mecha
- Urban legend
- Psychology
- Phantoms
- Memories
- Alter-Ego
- Developing Powers
- Dungeons
- Goddesses
- Gods
- Guilds
- Monsters
- Swordplay
- Androids
- Robots
- bounty hunters
- Space
- Auto racing
- Sports
- Absurdity
- Gore
- Real robot
- Terrorism
- Post-apocalyptic
- Vampire
- Battleships
- Conspiracy
- Navy
- War
- Mermaids
- Swimming
- Bishounen
- Friendship
- Mad bomber
- Crime
- School
- discovery
- Suicide
- Rebirth
- Cruise Ship
- Thief
- Aliens
- Idols
- Love Triangle
- Isekai
- Angst
- Space Battles
- Hybrid Robot
- Talking Animals
- World War II
- Time Travel
- Brothers
- Yuri
- Alternate History
- Space Navy
- Space Colonies
- Epidemic
- Reverse Harem
- Ninjas
- First love
- Coming of Age
- Cyberpunk
- Basketball
- Bishoujo
- Entering Adulthood
- Parenting
- Family
- Catgirl
- Clans
- Music
- Piloting
- Artificial Intelligence
- Bands
- Airplanes
- Social Hierarchy
- Exorcists
- Magic
- Mystery
- Pirates
- Political Fiction
- Social-networking
- Society
- Journey
- Belonging
- Alchemy
- Homunculi
- Flying Train
- Space Western
- Martial Arts
- Robot Girl
- Yokai
- Aliens
- Growing Up Pains
- Special Abilities
- Superheroes
- Demi-Humans
- Other World
- RPG
- Social Stigma
- Dragons
- Maids
- Monster Girls
- Vintage Cyberpunk
- life After Death
- Zombies
- Alienation
- Aquire Skills
- Heroes
- Video Game
- Level Up
- Dungeon
- Acting
- Biology
- Human anatomy
- Science
- Nature
- Doctors
- Animals
- Workplace
- Reincarnation
- Mythology
- Medical
- Strategy Game
- CGDCT
- Gag Humor
- Mahou Shoujo
- Magical Sex Shift
- Pets
- Adult Cast
- Love Polygon
- Romantic Subtext
- Performing Arts
- Psychological
- Otaku Culture
- Team Sports
- Organized Crime
- Delinquents
Ron Kamonohashi, the best student in the history of the elite Detective Training Academy BLUE, has been living as a recluse since BLUE expelled him five years ago. Moreover, he is forbidden to work as...
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