Civil servant Yorito Igarashi (Tsuna Keinaga) ushered in the most unfailing day in his life today.He is waiting for his lover Rin Tsutsui (Shiori Kubo) in the restaurant and plans to propose to her.

Lai Ren has always put stability and stability as the first priority in his life.If he can get through today smoothly, he should be able to live a peaceful life...

However, at this moment, a man who claimed to be himself in 30 years (Katsunori Takahashi) suddenly appeared, and was told that if he did not cancel the proposal, he would live a failed life.