In the world where they are learners graduate 2 years early.
As orochi and kouizashi graduated they were told to pick any two weapons of their choice orochi taking a katana and kunai and kouizashi smiled and said u idiot why would u need a kunai if u have a sword then orochi told him to pick as he picks a kunai but can't decide on anything else but time is running out so he just picks a long chain and runs to where orochi is orochi,kouizashi and the most of the school sign up to be a sinobi of Japan orochi asks why he picked a chain kouizashi looks at the chain not realising he took it orochi told him. A chain is not even a weapon and he is the only one standing with a chain.As they went home orochi and kouizashi is stopped by a man calling them looked and it's the kenran civil squad as they appeared and stared at kouizashi and orochi the leader of the KCS(kenran civil squad)
Named Gato flickered right infront of kouizashi asking him to lift cover off his eye kouizashi telling him tht he doesn't want tells orochi to walk but the KCS which has 7 members all activated their kenran kouizashi telling orochi to get ready as he pulls his chain and kunai out of his bag
Gato tells orochi and kouizashi tht they won't win if they fight them kouizashi asking wht is his business with his eyes Gato telling him they looking for a new members for the KCS kouizashi asked why him gato says tht he have a kenran kouizashi told them tht orochi also have kenran and in both his eyes Gato asked orochi to show him his Kenran orochi showing gato his kenran as it allow him to predict movement and etc Gato asks kouizashi and orochi to join KCS but kouizashi declines and orochi accepts they ask orochi to come with them orochi looks at kouizashi and kouizashi nods as they all touch gato and holding on to orochi they teloport away kouizashi wondering why everything is going so fast he walks home arriving home he makes his favourite 3x spicy noodles and watch tv then looks at his kunai and chain then decide to put the kunai at the edge of his chain and then just leave it in corner as a goes to sleep orochi us examine and his brainwaves show tht he have a kenran the squad introduce themselves and then give orochi a suit telling he is part of them now he works for the government under the direct order of the president and they will cover all his expenses as orochi goes back home he walks pass a man the man asking him for the time and orochi replying 02:30 am the says thank u as the man smiles and says now I introduce myself as the man is kimimaru