In an accident, a student at the military academy lost all his memory and his temperament changed drastically. As a good friend, he vowed to find out the truth and awaken the other party's lost memory.
And the 'accidents' didn't stop.
The blood-stained dagger, the special coat of arms, the unfamiliar name, the accident, and the vague words of a close friend.
What happened?
When lost and found, the truth comes out
And what did I forget?
This is a long fanfic. The world view and characters are all from the Song of Time project
Cp: Mainly drama, Visavi, Southland group, no difference