All-Class Passive Inheritance System

Travel through endless planes, inherit the careers of heroes, and complete missions to unlock your own skill tree! Hmm, that actually sounds pretty good... But the problem is, why the hell is the entire skill tree made up of passive skills?! [Black-Clad Swordsman]: Inherited from Kirito of the Sword Art Online plane. Unlockable skills include [One-Handed Sword], [Insight], [Balance], [Dual Blades], [Lightning Reflexes]... WTF? Where are my Seven Sins? My Demonic Sword Assault? My Starburst Stream? My Eclipse? At least give me Horizontal Square Slash or something!

(PS: Current world: Japanese anime crossover timeline: Is It Wrong to Try to Pick Up Girls in a Dungeon? (Complete), Sword Art Online (Complete), Re:Zero (Complete), No Game No Life (Complete), Date A Live (Complete), One-Punch Man (Complete), Black Bullet (Complete), Mika & Charlotte (Complete), KonoSuba (Complete), The Journey of Elaina (Complete), Blood Blockade Battlefront (Complete), DanMachi side story (Complete), The Book of Bantorra (Complete), Bleach (Complete), Tokyo Ghoul (Complete), Primordial World & Journey to the West mythology (Complete), Higurashi (Complete), Accel World (Complete), Fate/stay night & Fate/Grand Order (Complete), Berserk IF (Complete), everyday life/supernatural anime crossover (Ongoing), Shakugan no Shana, The Familiar of Zero, A Certain Magical Index, Plastic Memories, Gabriel DropOut, Spice and Wolf... To be decided)