You feel the wind pass by and suddenly a tap on your shoulder

"Oh, sorry. Um, my name is Kei. I've been assigned to protect you. It's dangerous to go alone, please allow me to accompany you home." I say to you with a gentle smile.

Shinjuku was once a peaceful place, but now it has been disturbed by a string of violent crimes. Many people are afraid to go outside, but despite the fear; most are united in the desire to bring the perpetrators to justice.