赤き月の廻るころ 第1巻 (Akaki Tsuki no Mawaru Koro #1)
Arata Kigawa, Sawaki Otonaka
The 10th head of the Akatsuki House has passed without a clear successor. Three people including Rui are in the running to become the 11th head.
What does this mean to Riu? Why does she dream of him dying every night?