Shirou Emiya was an ordinary high school student who couldn't catch a break, until he inherited a legacy from the myriad worlds. Along with another version of his own legacy, he can also load a save and draw a talent from an entity that once killed him.
Fate: You become bound to Heracles by a bond of life and death. Load a save where baby Heracles is nursed by Hera and gain a strengthened body, a demigod's physique.
Re:Zero − Starting Life in Another World: Return by Death? I can load a save over forty times in one world, and there are countless other versions of me across the myriad worlds.
Demon Slayer: Muzan Kibutsuji, listen to the roar of the sun.
Honkai: Star Rail: Voracity, face my endless chain of Ultimate moves!
Jujutsu Kaisen: Sukuna cuts you in half. Load a save where Sukuna is at his peak, slays a squad of sorcerers, and masters the Reverse Cursed Technique.