NEET Receives a Dating Sim Game Leveling System

Tags: Alternate World, Appearance Changes, Beautiful Female Lead, Brother Complex, Calm Protagonist, Caring Protagonist, Character Growth, Cheats, Cohabitation, Demons, Dense Protagonist, Fat to Fit, Galge, Game Elements, Ghosts, Handsome Male Lead, Hard-Working Protagonist, Hidden Abilities, Hiding True Identity, Honest Protagonist, Indecisive Protagonist, Late Romance, Level System, Loli, Male Protagonist, Mature Protagonist, Modern Day, Monsters, Multiple POV, Mysterious Family Background, Mysterious Past, Mystery Solving, Otaku, Overpowered Protagonist, Past Plays a Big Role, Personality Changes, Polygamy, Reincarnated in Another World, Reincarnation, Romantic Subplot, Secret Organizations, Siblings Not Related by Blood, Sister Complex, Special Abilities, Spirit Users, Spirits, System Administrator, Time Manipulation, Transmigration, Trap, Ugly to Beautiful, Weak to Strong, Younger Sisters