Invincible (Saint Seiya + Yu-Gi-Oh 5DS)

To put it simply: when the poor boy meets the eldest lady, when the cheat king meets his cheat, when the god-like duelist meets the victory goddess of war and wisdom. An ancient legend, a contract, and an apple - Fudo Yusei inexplicably received the goddess of wisdom's company day and night and the promise of being undefeated. But the most painful and dangerous thing in the world is never failure, but invincible self-contradiction.