
Hotaru Kusakari is married to Gorō Kusakari, and she works as a pharmacist. She holds a secret that she is really a ninja and part of the Kōka ninja clan. 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 the Iga ninja clan. Even though Hotaru and Gorō are a married couple, they are each unaware that their partner is a ninja.
Ninja ni Kekkon wa Muzukashii is a Japanese drama of 79,128 characters, with 4,250 unique words and 1,262 different kanji. Its difficulty rating on Jiten is hard, 3.2 out of 5. The full vocabulary list ranks all 4,250 words by how often they appear, and you can study them on Jiten or download them as an Anki deck.
Here are some of the words that appear most often in this media, as well as a sample of its rarer vocabulary.