Cardfight!! Vanguard (2011) : 3x45

After much training, Naoki finally constructs a suitable deck with help from Shingo. The two then decide to go and reclaim Miyaji Academy from the Reversed fighters inhabiting it. They encounter Maki, who summons all of the Reversed fighters (except Kamui and Kourin). Together, Naoki and Shingo take on all of the fighters, defeating them one by one. However, unbeknownst to Naoki as he continues fighting, Shingo loses to Maki. After beating the last of the Reversed fighters, Naoki searches for Shingo but then comes across Naitou and Suwabe. Soon after, Naoki finds Shingo but is shocked to discover that the latter is Reversed. Determined to bring his friend back, Naoki engages the Reversed Shingo in a cardfight. Naoki gains an early advantage, but Shingo strikes back with Covert Demonic Dragon, Hyakki Vogue "Reverse" and its Limit Break. With the Reversed Shingo denouncing all sense of friendship he had with the Cardfight Club, Naoki begins to lose the will to fight until he hears the real Shingo's voice, motivating him to continue the battle...