Tsukuyomi: Moon Phase volume 6 features story and art by Arima Keitaro.

Kouhei's crush deepens after spending more time with Hazuki. He longs to protect her from all that is evil. He asks his grandfather to teach him some powerful fighting techniques, but his grandfather has other plans for Kouhei that are more important for survival. Kouhei must learn quickly in order to stop a mysterious man from kidnapping Hazuki.