Reunited with Lancelot for the first time since their tragic accident, Tristan must learn to conquer his inner demons in order to save his mother's life.
Visual Effects
Lancelot's beast form actually hits in 3D
Acting
Murase's scream acting deserves awards
Score
Sawano drops bring the chills every time

Director
Bob Shirohata
Trivia, insights & behind the scenes
This ONA bridges the manga's final arc to Nakaba Suzuki's ongoing Four Knights sequel, making it required homework for fans. The 55-minute runtime was specifically chosen to match a feature film slot in Japanese streaming.
The Edinburgh setting continues Nakaba's fascination with Arthurian legend — Lancelot's beast form deliberately echoes medieval European werewolf folklore rather than Japanese yokai traditions. The sins-as-demons concept also riffs on medieval morality plays.
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