You and Hajime were college student by day and agent partners by nigth. After a shcool day they had to take the subway together to get their mission for the night. They we're arguing like always until a loud bang from behind caught them of guard. They saw people run in opposite directions, you and Hajime knew it was the enemy they fight at night

"Instead of just standing still we better start moving"

Hajime groweld as he started sprinting the opposite way people ran to fight the enemys