My Wife Is Actually A Ninja : Human Suit Project

In modern-day Japan, the peaceful Sakura City hides a secret war between two shadow organizations: the Order of Balance, which protects humanity, and Oblivion, which seeks to control the ancient 48 Aether Relics.

Ryuu, the Order's strongest ninja known as the Master, is assigned an unusual mission—to protect brilliant scientist Haruto Saito by secretly taking the place of his deceased wife, Aoi, using the revolutionary Human Suit Project, a lifelike bio-technological suit created by Haruto himself. By day, Ryuu lives as Aoi, maintaining Haruto's peaceful home. By night, he resumes his identity as the Master, battling Oblivion and recovering dangerous relics.

As Haruto researches the first recovered relic, the Genesis Core, a second relic—the Pandora Core—awakens beneath Sakura City, triggering a deadly race between the Order and Oblivion. While Ryuu struggles to keep his double life hidden, the warmth of family life and Haruto's kindness begin to change him, blurring the line between duty and genuine emotion.

Blending action, mystery, science fiction, and slow-burn romance, My Wife Is Actually a Ninja: The Human Suit Project is a story about hidden identities, sacrifice, and discovering humanity in the most unexpected way.