System Administrator, Artificial Intelligence, Special Ability, Male Lead

Full Color Manhwa
Animal Lover
Animal Sidekick
Animal Transformation
Kind Male Lead
Hidden Power
Special Ability
Master-Disciple Relationship
Training ---> Weak to Strong
Fighting
Friendship
Rivals Become Friends

Full Color Manhwa
Transported to a Book World
Reincarnated in a Book World
Apocalypse
Game of Death
Survival Game
Survival of the Fittest
System, Game Elements
Sword and Sorcery
Mysterious Benefactor
Special Treatment
Regressor
Perceptive Protagonist
Deceptive Protagonist
Precognition
Competent Protagonist
Strong-Willed Male Lead
Smart Male Lead

Full Color Manhwa
Hero Vs Villain
Special Ability
Super Powers
Reincarnated as the Villain
Revenge

Full Color Manhwa
Reincarnated in Another World
Reincarnated in a Book World
Transmigrated to Another World
Transmigration
System Administrator
Magic, Cheat Skill
Money Problems, Debt, Fallen Nobility
Knight
Sword and Sorcery
Training, Weak to Strong
Clever Male Lead

Full Color Manhwa
Reincarnated in the Past
Time Rewind
Second Chance
Murim World
Level System
Game Elements
Martial Arts
Strong Male Lead

Full Color Manhwa
Reincarnated in Another World
Reincarnated in a Game World
Transmigration
Transported to a Game World
Sword and Sorcery
Royalty, Prince, Knight
Level System
Weak to Strong

Full Color Manhwa
Returning from Another World
Demon King
Demon Powers
Half-Demon Male Lead
Food Lover
Secret Identity
Level System
Badass Male Lead
Cunning Male Lead
Ruthless Male Lead
Strong Male Lead

Full Color Manhwa
Reincarnated in a Book World
Transmigration
Magic School
Special Ability, Sniper
Dungeon Exploring
Magic Powers
Skill Growth
Level-Headed Male Lead