One Piece: Season 1, Episode 360

1 - 360: Save Me, Hero!! My Enemy Is the Immortal Princess

Usopp is forced to go through a gauntlet of Perona's Horo-Horo powers, including an untouchable body, size manipulation, passing right through him and creating mini-Hollows that slowly rip away at his stamina and body. Temporarily turning into Sogeking to finally remove Bearsy's shadow, Usopp is forced up against a desperate wall until he finally discovers Perona's weakness: her own room, where her real body lies helplessly while using her abilities!