To obtain Ruffy (5th Form), a 7-star unit representing Monkey D. Luffy's Gear 5 from One Piece, you need to evolve Ruffy (Mystical). The evolution process requires specific units: 1x Ruffy (Mystical), 6x Straw Hat, 3x Ruffy (Snake SSS), and 8x Gomu Fruit. To evolve Ruffy (Mystical), you need 1x Ruffy (Kid), 5x Straw Hat, and 3x Gomu Fruit. Note that Ruffy (5th Form) is not available from the Special Summons.