Undefeated Bahamut Chronicle

Lux, a former prince of an empire named Arcadia that was overthrown via a rebellion five years earlier, accidentally trespasses in a female dormitory's bathing area, sees the kingdom's new princess Lisesharte naked, incurring her wrath. Lisesharte then challenges Lux to a Drag-Ride duel. Drag-Rides are ancient armored mechanical weapons that have been excavated from ruins all around the world. Lux used to be called the strongest Drag-Knight, but now he's known as the "undefeated weakest" Drag-Knight because he will absolutely not attack in battle. After his duel with Lisesharte, Lux ends up attending the female-only academy that trains royals to be Drag-Knights.

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  Yukiyo FujiiKrulcifer Einfolk (voice)
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  Mutsumi TamuraLux Arcadia (voice)
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  LynnLisesharte Atismata (voice)
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  Shizuka IshigamiKirihime Yoruka
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  Yurika KuboAingram Philphie
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  Risa TanedaRalgris Celistia
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  Ari OzawaArcadia Airi
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  Ryota OsakaArcadia Fugil
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  Shiori IzawaLilmit Tillfur
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  Rie TakahashiLeaflet Noct