Return of the Unrivaled Spear Knight

Tags: Academy, Accelerated Growth, Adapted to Manhwa, Appearance Different from Actual Age, Aristocracy, Beautiful Female Lead, Betrayal, Charismatic Protagonist, Clever Protagonist, Cold Protagonist, Complex Family Relationships, Demons, Dragons, Elves, Empires, European Ambience, Fantasy World, Gods, Handsome Male Lead, Kingdom Building, Kingdoms, Knights, Loyal Subordinates, Magic, Male Protagonist, Mature Protagonist, Multiple POV, Multiple Realms, Mysterious Past, Nobles, Past Plays a Big Role, Polygamy, Previous Life Talent, Protagonist Strong from the Start, Reincarnation, Revenge, Royalty, Schemes And Conspiracies, Second Chance, Seven Deadly Sins, Spear Wielder, Strength-based Social Hierarchy, Strong Love Interests, Strong to Stronger, Sudden Strength Gain, Sword And Magic, Time Skip