Kusakari Hotaru is married to Kusakari Goro, and she works as a pharmacist. She holds a secret that she is really a ninja and part of Koka Ninja’s family. Her husband holds a routine job as a postal delivery man, but he has a secret as well. He is also a ninja and part of Iga Ninja’s family. Even though Kusakari Hotaru and Kusakari Goro are a married couple, they are unaware their partner is a ninja.