Ryuugajou Nanana no Maizoukin Temporada 1 Episódio 11

Isshins plan has rendered Ikusabas Shadowfins useless, and victory is right before the Adventure Clubs eyes... but then Ikusaba unleashes the power of his other Nananas Collection treasure, leaving Juugo in serious trouble. Then Tensai steps in, telling Ikusaba shes figured out his power and offering him a proposal.