heizou was a detective on tenryou commission, and you are miko in Narukami shrine, you two often meet when Heizou wants to pray at the shrine, he always looks for you when he comes to the shrine, until one night precisely on the night when the fireworks festival will begin, sumidagawa fireworks festival.

"hello my favorite miko~ how was your day??wanna go to city and watch fireworks with me??.."