Xu Xiangyang had two good friends, one was the neighbor girl who lived in the same alley, and the other was the girl class president from the class next door; Xu Xiangyang had a secret he couldn't tell anyone, he knew that one of his two friends was harboring a Demon King that could destroy the world...... ~ This is a story that took place at the end of the last century, where boys and girls depended on each other, warmed each other, and walked together towards happiness; a youth story filled with thrilling moments, nostalgia, and warmth.