第 1 季 共 12 集
播出时间：2020年10月3日
第 1 集 Water Lily: Purity of Heart
播出时间：2020年10月3日
Riri enters Yurigaoka Girls' Academy to become a Lily and protect people from the Huge, but finds her fellow Lilies more competitive and combative than she'd imagined. When a Huge specimen escapes, can Riri survive her first battle with no training?
第 2 集 Lily of the Valley: Return of Happiness
播出时间：2020年10月10日
Riri is determined to get Yuyu to agree to be her Schutzengel and find out what changed her, but Yuyu won't even talk to her. Riri works out her feelings as she learns her way around Yurigaoka Academy.
第 3 集 Forget-Me-Not: True Love, Memories
播出时间：2020年10月17日
Riri is overjoyed that Yuyu is now her Schutzengel, but can she hold up under Yuyu's harsh training? Then, when a powerful Huge attacks, Riri gets a glimpse of Yuyu's secret.
第 4 集 Fragrant Olive: A Person of Eminence
播出时间：2020年10月24日
Riri is slacking off now that Yuyu has accepted her. Yuyu asks Riri to form a legion to keep her active, expecting her to fail. But when Riri starts actually recruiting members, Yuyu may be in for more than she bargained for.
第 5 集 Jade Vine: Forget Me Not
播出时间：2020年10月31日
Yuyu wants to give Riri a birthday present but doesn't know what to give her. While Riri struggles to find two more members for her legion, can Yuyu overcome her awkwardness and find a way to cheer Riri up?
第 6 集 Violet: Daydreaming, You Occupy My Thoughts
播出时间：2020年11月7日
Riri's newly formed legion goes to watch an experienced legion fight to study teamwork. The Huge they're fighting, however, is more than it seems, and Riri and Yuyu's bond will be tested like never before.
第 7 集 Freesia: Innocence
播出时间：2020年11月21日
Riri finds a mysterious girl in the remains of a dead Huge. The amnesiac girl quickly grows attached to Riri, who devotes herself to taking care of her. But just who is this girl, and how will Riri's legion deal with her absence?
第 8 集 Camellia: You're Flame in My Heart
播出时间：2020年11月28日
Yurigaoka holds a school-wide competition to choose the year's best Lily. Riri worries that the inexperienced Yuri could get hurt in the games, but with spies swarming outside the school grounds, that could be the least of her worries.
第 9 集 Cosmos: The Joys That Love Life Can Bring
播出时间：2020年12月5日
When Yuri's origins are revealed, she is classified as a Huge. Riri flees the academy with her, but orders are issued for their capture. What will the other Lilies choose when ordered to hunt one of their own?
第 10 集 Anemone: Believe in You and Wait
播出时间：2020年12月12日
Riri is confined for a week as punishment for insubordination and sinks into depression over Yuri's death. The other members of her legion look for her missing hair tie, hoping to cheer her up, but will it be enough?
第 11 集 Lily: Purity
播出时间：2020年12月19日
As Riri and the others continue to grieve, Yuyu isolates herself, tormented by visions of Misuzu. As the Huge attack Yurigaoka as they never have before, Yuyu is forced to question the truth of her relationship to her late Schutzengel.
第 12 集 Bouquet: Flower Language
播出时间：2020年12月26日
The most powerful Huge yet is attacking Yurigaoka, and Riri is the only one left who can fight! Can Yuyu overcome her past in time to join her? And what can the other Lilies do against an enemy that disables their weapons?
