At the age of 23, Wen Zai, whose heart feels calm, who is single and honest, and whose stubbornness is deeply rooted in the hearts of the people, unintentionally downloaded an accounting APP on the occasion of the New Year. From then on, a mysterious man appeared in her life... Atobe Keigo was 15 years old, confident and narcissistic, gorgeous and powerful at the same time. In the year when he finally killed Xu Feigang and he could grow up, he had an accounting APP on his phone that could not be deleted. From then on, a strange woman appeared in his life...