Doomsday: at the Beginning, Shiyu Kasumigaoka Scolded Her for Being Yellow.

Traveling through ten years, the apocalypse breaks out! What a coincidence, Su Yang is on the train to Kyoto at this moment! Out of good intentions, he reminded Kasumigaoka Shiu and others who wanted to get out of the car, but he was scolded: "Huang Mao, shut up!" The yellow hair system is activated. As long as you do something that matches Huang Mao's behavior, you will get redemption points. From then on, Su Yang never returned on Huangmao's road: "An Yilun, too. If you want to survive, help me trick Kasumigaoka Shiyu into coming!" "Yunoshita Harano, you don't want these things to happen to your sister now, do you?" "Lao Deng... No, Mai's father, if the will-o'-the-wisp stops at your door, it won't be lost!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.