Everyone found out that Sawada Shin has a younger sister and Shin actually lives alone after bickering with his father. Shin's sister, under a lot of pressure from their parents, decided to go to a dangerous club. Shin found out and tried to help her sister escape, but after police officers came and Shin was determined to make sure his sister wasn't caught, Shin was the one who got arrested. However, the police demands that to release Shin, one of his parents or legal guardians must pick him up. (thetvdb.com)