Yuan Yajiuli is a beautiful girl of light in this world. Her partner is Ai Jiang, who fought against selfish monsters and lost once. At this time, as a partner, Ai Jiang turned into an egg. Later, Ai Jiang guided the healing master to meet the other four people. Because Aguri let himself grow with the power of will, he can only maintain his transformation state for five minutes, so he should enhance the strength of others. The real identity is a girl like Yuki.