A young girl, knowing that she has only a few years left, signs a contract with a pseudo-god in her dream and lives her remaining life in two parts. However, the price is that when her life ends, everything about her in the world will be erased, including her memory.
Despite this, she still signed the contract and decided to extend and explore towards a more distant future.
So, when the male protagonist was 15 and 29 years old, she met her in different identities and fell in love with him, but the male protagonist did not know that she was the girl she liked in childhood.
Until the last dusk...