Ichigaya district that is located in Tokyo, about one kilometer in the heart of Shibuya, a personal driver of a military facility quietly parks a tinted black car outside a white office building. On a 15-minute drive north, he picks up a passenger who is carrying an important package: top-secret intelligence reports and cases only for the prime minister to see.
Where they're going is not just an ordinary military facility but a secret spy agency headquarters known to solve big cases. Known as Division for Intelligence, it is like a National Security Agency of Japan. The office building is inside a high security compound even a normal people who doesn't work in there can't get out alive.
The passenger went out of the car and run as fast as he can to enter the office building. A guy in the black suit welcomed the man and hugged him tightly.
"Welcome back to the agency, Atsumu"
"This is not funny Hinata. I never planned to go back in here in the first place" Atsumu said while removing his tux placing it on his chair.
"We're short of people you see. We need a lot of people for this case cause it is too dangerous for the newbies to meddle on it." Hinata said while giving Atsumu a cup of coffee.
"It's been two years. There's no way they lack experience on this line of work."
"We haven't received any cases for the past few years so they weren't qualified for this. Didn't Mr. Shibayama discuss this with you? Did you just accepted this because he asked for you?" Hinata said while leaning on Atsumu's desk with his arms crossed.
"It's not like that. He just discussed it briefly through call so he was careful not to be wiretapped" Atsumu said after having a sip of coffee. As usual, Hinata's blend of coffee is the best that he tasted.
"Daichi-san also asked me to let you know that the moment you arrived, you need to see him in the office"
Atsumu choked on what Hinata said and grabbed his collar.
"You should have said that sooner! I don't want to be killed on my first day of comeback!"
Hinata just chuckled and slightly pushed Atsumu signaling him to run and meet Daichi or else he can be killed in an instant. Atsumu run as fast as he can till he reached his boss's office. He slowly opened the door and saw Daichi staring at him intensely. He slowly walked closely and heard a big sigh from his senior.
"You're late as always"
"I'm sorry it's just that Hina---"
Atsumu was cut off when Daichi threw a folder infront of him.
"I don't want to waste my time hearing your excuses. That folder will be your next mission. It contains file of the people that you will be dealing and people who will be with you throughout the case."
Atsumu grabbed the folder and scanned it looking for people he is familiar with.
"Aren't these people new to this? I haven't been with these people before nor talked to them."
"That's exactly the point. We don't need you to cooperate with them. Everybody on the clan will think of you as one of them and no one will be suspicious of you. You will do everything to gain everyone's trust. We gave you their profile so that you will know who needs to be killed and needs to stay alive. We already set up a plan throughout this case so you better memorize every single plan that we have. Sugawara made it so it's a 80-20 chance that this will work out."
"Wait what do you mean by killed?"
"You will be the next hitman of Sakusa-kai yakuza clan"
Atsumu turned the pages stopping infront of the new head of the yakuza clan.
"Sakusa Kiyoomi...."