With Chris as the "god of death" of the yellow dormitory, the curtain finally rises on the battle of the three dormitories! The Ao dormitory with Hurie, Lapis, and Astemil, and the Zhu dormitory with Flare, Sanjo Rei, and Liu Yulian. Against the overwhelming offensive power of the other dormitories, the Yellow Dormitory was forced to walk a tightrope with its soldiers while Hiiro, Tsukiage, and the others demonstrated their abilities. Meanwhile, behind the scenes, the Eisbert family, which is after the mules, is playing a dark role to reduce the strength of the yellow dormitory. In the midst of the back-and-forth battle, Hiiro and the others tactfully reveal their dark activities, and the battle of the three dormitories is brought to a head-to-head battle between the dorm heads. Mule, who was scorned as a "failure" and "pseudo," challenges the fateful battle with the teachings of Heero in mind!