Girls' Frontline: Singularity

(This book is already contracted with another site.) Tears blur his eyes. He has forgotten most of his memories, but he still remembers his enemy.

He abandons his former identity and takes refuge under a military security contractor called Griffin, where he becomes a commander.

Think this is going to be a tragic story? In fact, it's the day-to-day life of a Griffin commander who's a total goofball.