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.
Episodes
The Crimson War Princess
Lux Arcadia falls into the baths of the all-girls Royal Knight Academy, and right on top of the naked Princess Lisesharte Atismata, who challenges him to a duel as penance.
The Weakest Drag-Knight
Lux begins his life at the academy and meets an old childhood friend, much to Lisesharte’s chagrin. Later, Lux and Lisesharte face old, dark memories of the recent past.
The Lady of the North's Engagement Conditions
When Lisha throws Lux a party, a week of Lux’s time is offered as a game prize! The outcome could be worse, but his new position lands him in an awkward and dangerous place.
The Sixth Ruin -Miniature Garden-
Lux mentally prepares for his duel with Lord Barzeride. Meanwhile, the nobles of the New Kingdom order an investigation of some ancient ruins which may hide a powerful Abyss.
A Girl's Wish
Krulcifer reveals her painful past to Lux. In an act of sympathy, she decides to release him from their agreement and begins to prepare for her duel against Barzeride.
The Homecoming of the Strongest
When Lux meets a high ranking noble girl under false pretenses, he’s put in a tight spot. It gets worse; she has a reputation for misandry and wants him out of the school!
A Girl's Truth
The students head to a training session on the beach. However, it’s not all fun in the sun as the prowler from campus is revealed and mysteries abound as a new ruin appears.
Awakening of the Phantom Divine Beast
Exploring the new ruin yields a fascinating find, but Philuffy begins to feel ill. As she and Lux are thrown into a site from their past, Lux recovers some ghastly memories.
The Promise
Lux faces off against Hayes in a fight to save Philuffy’s life. With Hayes’ nefarious plans already in motion, another dark figure emerges from the shadows of the old Empire.
The Young Girls' Reward
Lux has to choose not one, but three, dates for the National Foundation Festival. While Lisha nurses hurt feelings, a supporter of the old Empire emerges from the shadows.
The Imperial Assassin's Dagger
Lux discovers that a rebellion is being plotted by a group from the old Empire, and Airi is worried as he agrees to conditions he may be unable to meet.
The Young Girl's Cherished Desire
With the fate of their country and its people hanging in the balance, Lux and Lisha fight against their toughest foe yet; an enemy born of their pasts.
Top Cast
Yukiyo Fujii
Krulcifer Einfolk (voice)
Mutsumi Tamura
Lux Arcadia (voice)
Lynn
Lisesharte Atismata (voice)
Shizuka Ishigami
Kirihime Yoruka
Yurika Kubo
Aingram Philphie
Risa Taneda
Ralgris Celistia
Ari Ozawa
Arcadia Airi
Ryota Osaka
Arcadia Fugil
Shiori Izawa
Lilmit Tillfur
Rie Takahashi
Leaflet Noct
