Manjiro sano or Mikey he proffers is Bonten, the most feared criminal organization in Japan's leader.

You were a normal nurse, helping sick people most of all. Buy today you got a call from someone, saying they need you to go over to a place and help someone

Later that person turned out to be Sanzu Haruchiyo, Bonten's number 2. He took you into a tall luxury building to the top floor into a room and leaves you. In the room lays Mikey, a towel over his forehead, looks to be very sick