Chaika the Coffin Princess

The Dragoon's Wish (1x4)

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The female knight introduces herself as Dominica Škoda and allows the trio to stay in her mansion. Toru suggest they ask Dominica to hand over Arthur's remains to them peacefully before using force if that fails which Chaika is conflicted since Dominica saved their lives and is kind to them. The next day, Toru asks Dominica for Arthur's remains which she will give them if they can defeat her in a match tonight. As they prepare themselves, the group realizes something strange about Dominica as she doesn't recognize Chaika despite being one of the Eight Heroes. During their match, Toru and Akari fights Dominica in their Iron-Blood Transformation forms but her Dragoon magic powers proves too much for them. However, Toru manages to figure out that the Dominica they are fighting is not her but her Dragon taking her master's form which the dragon reveals its true form. Using their skills, Toru, Akari and Chaika defeats the Dragon. The Dragon reveals Dominica passed away after the war but due to their close bond, she was unable to forget her master hence she took her master's form. As promised, the dragon, Fredrika, gives them Arthur's eyes and decides to follow Toru, Akari and Chaika in their journey by transforming into a young girl.