"Marriage is Difficult for a Ninja" explores the complicated life of a couple deeply in love, each harboring a dangerous secret. While one works as a pharmacist and is secretly a Koka Ninja, her husband, a postal delivery man, conceals his identity as an Iga Ninja. Unaware of their partner's true nature, they belong to ancient ninja families, generations-long rivals filled with hostility. Their once-happy marriage faces everyday challenges, from household chores to bathroom disputes, causing a gradual deterioration. But domestic issues become trivial when a sudden assassination rocks their world. This pivotal event forces them to confront their hidden lives and the bitter clan rivalry. They face an ultimate dilemma: choose their love and marriage, or their family's deep-rooted allegiance and conflict.
Other names: 忍者に結婚は難しい, にんじゃにけっこんはむずかしい, Marriage Is Difficult for a Ninja
Genres: Action, Comedy, Hidden Identity, Romance, Thriller