[Quick time travel, 1v1, male protagonist suffers, double cleansing, female protagonist is the same person from beginning to end] Ayakawa just wants to change the tragic ending of the villain and complete the task so that he can restore his memory. However, he accidentally discovered that the target of the mission not only liked him, but also wanted to be an attacker.
Ayakawa: "I regard you as a task target, but you want to be my target?!"
Purpose: Thousands of sails will live through the years unstained