Memoirs of the Returnee

Academy, Accelerated Growth, Alchemy, Anti-Magic, Aristocracy, Beautiful Female Lead, Betrayal, Bullying, Calm Protagonist, Cheats, Child Abuse, Clever Protagonist, College/University, Conditional Power, Corruption, Death, Death of Loved Ones, Depictions of Cruelty, Discrimination, Dolls/Puppets, Drugs, Dungeons, Eidetic Memory, Elemental Magic, European Ambience, Evil Organizations, Fantasy World, Fast Learner, Flashbacks, Game Elements, Golems, Handsome Male Lead, Hard-Working Protagonist, Human Experimentation, Jack of All Trades, Knights, Limited Lifespan, Loner Protagonist, Love Triangles, Magic, Magical Technology, Male Protagonist, Mature Protagonist, Mysterious Past, Nobles, Orphans, Past Plays a Big Role, Pets, Politics, Revenge, Rivalry, Schemes And Conspiracies, Second Chance, Sickly Characters, Skill Assimilation, Slow Romance, Social Outcasts, Special Abilities, Spirits, Strength-based Social Hierarchy, Suicides, Sword And Magic, Sword Wielder, Terminal Illness, Tragic Past, Transplanted Memories, Underestimated Protagonist, Unreliable Narrator, Unrequited Love, Virtual Reality, Weak Protagonist, Weak to Strong, Werebeasts