Cardfight!! Vanguard

Beautiful Nagisa (5x8)

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Chrono meets a girl who Kamui is all too familiar with: Nagisa Daimonji. She may have matured, but her romantic feelings for Kamui have stayed strong over the years. She has even gone so far as to make a quest for fighters (Team Trinity Dragon) to get Kamui to play against her. Kamui tries his best to escape, but he is eventually cornered by Nagisa and Trinity Dragon. Chrono appears in Kamui's defense after accepting his quickly-made quest to protect him from Nagisa. However, Chrono is deceived by Nagisa's (false) "tragic love story" and sides with her while Kamui manages to enlist Trinity Dragon to his aid. After this whole debacle, Kamui finally decides to fight Nagisa. If he wins, then Nagisa will leave him alone at the shop. But if Nagisa wins, then she and Kamui will get married. Despite Nagisa's luck in getting triggers, Kamui manages to defeat her, although she will most likely return.