Kageri ni Komorebi, Sore kara Midori

Taishou Era Year 2. Having become the head of a noble house at a young age, Kuroki is reacquainted with his school friend, Arima, at a dinner party. Though rumors are flying about Arima, Kuroki is nonetheless drawn to the whimsical, no-account Arima. However, since he must live his life for his nobl