Deuterium Mei is a simple and ordinary junior high school student who got a book "Unlucky Expert" by chance.
But just because of this book, Deuterium Mei has been unlucky. She falls down every day and gets water on her face when she washes her hands...
Many classmates stayed away from her, and only her good friend Hao Yun stayed with her. Although sometimes Hao Yun would complain about her bad luck, she would always stay with Deuterium Mei.
So they set out to find the source of Deuterium Mei's misfortune...
Intention: To give to you who are unlucky