Harukanaru Toki no Naka de: Hachiyou Shou OVA

A quiet gathering at the minister's mansion takes an unexpected turn when Yorihisa, Takamichi, Eisen and Inori each discover that a treasured possession is missing. The four guardians share their suspicions and devise a plan to uncover the culprit.

Elsewhere, Akane, Tenma and Shimon find a letter challenging Yasuaki to a duel. With Tomomasa's help, they try to keep Kotengu's challenge out of its recipient's hands until the appointed time has passed, hoping to prevent an entirely unnecessary fight.