Gizoku Tantei Nosuri is a visual novel developed and published by Aquaplus. A spin-off of the Utawarerumono series, the game stars Nosuri and a reluctant Haku as they investigate evils threatening the Imperial Capital of Yamato.

It was a trivial matter that started it. Haku is living a busy life in the imperial capital of the great nation Yamato. Peaceful times seemed like they would last forever. However… Among the reliable friends that surrounded him, one sensed something strange. With clear wisdom and a discerning eye, and bold and delicate reasoning and judgment, a “good woman” who possesses the qualities of a “great” detective speaks. If someone in the east is suffering, she will be there to lend a hand. If someone in the west is troubled, she will save them. A chivalrous thief is sensitive to the signs of those in need. —It is from here that the curtains rise on the great Nosuri theater. It is she who will bring to light the true identity of the great evil that undermines the imperial capital. Haku: “What, I gotta get involved in all that?!”