Core theme: Love born toward death. Love is a contract that transcends life and death. Either we live together or we die together...
... Military love + sweet pet + sadomasochism +…………
This is a story about "protection" and "completion". The male protagonist protected his love for the female protagonist with his life (let her live), and she used her life to complete her love for the male protagonist (without him, life is meaningless). Their love began with the purest youth and ended with the most ultimate sacrifice...