第 17 集: 流子得知血之子的起源，而纏流子反抗良子以生命纖維進行的獻祭計劃。
After Mako and Senketsu dissolve the fight between Ryuko and Tsumugu, Aikuro explains to her how Tsumugu's sister, Kinue, died in a Life Fiber experiment, and that Senketsu was made with Ryuko's DNA, hence why only she can wear and communicate with him. Meanwhile, Honnouji Academy makes preparations for a cultural and sports festival to celebrate Ragyo visiting the school. Learning that this a cover up for a final experiment in which all of Honnouji City will be sacrificed to the Life Fibers, Ryuko and the others head for Honnouji, where the ceremony has begun. As Ragyo begins having the Life Fibers devouring everyone in the stadium, Ryuko and company arrive on the scene. Satsuki suddenly stabs Ragyo through the back and announces her rebellion against her and the Life Fibers, revealing this to be the purpose she has built Honnouji Academy for. (Source: Wikipedia)
集數
- 第 13 集 · 流子將Senketsu輸給Nui，而Satsuki正準備展開跨越多座城市的大規模突襲。
- 第 14 集 · 龍套在關西與精英四天王交戰，同時回收千鶴的碎片。
- 第 15 集 · 殺生院在東京與金王戰，龍套到場對峙。
- 第 16 集 · 纏流子籌辦祭典分發生命纖維服裝，而流子則揭曉仙石的真面目。
- 第 17 集 · 流子得知血之子的起源，而纏流子反抗良子以生命纖維進行的獻祭計劃。
- 第 18 集 · 兩儀拉奧揭露真實身份並擊敗纏流子，同時龍套與紐展開激戰。
- 第 19 集 · 雨滴落在我頭上
- 第 20 集 · 龍套對決紐，被迫穿上純潔，而纏流子則逃離監禁。
- 第 21 集 · 纏流子和血之衣在與龍套的戰鬥中陷入苦戰，而紐揭示純潔已與她的生命纖維融合。