Tying the Knot with an Amagami Sister manga volume 8 features story and art by Marcey Naito.

With Uryu and Yuna swapping places, they're having to deal with tests, Yuna's duties as a shrine maiden, and the school festival…all without knowing in when they'll change places! And when Omicchan finds out what's going on, it's not long before Yuna's hidden side is exposed, too! Can Uryu cut through the deceptions and discover the truth about Yuna and her feelings? And can Yuna's feelings for Uryu stay the same after going through such an ordeal together?! The “Maiden's Hide-and-Seek” storyline reaches its conclusion!