Fate/Samurai Remnant - Additional Episode 3 "Record's Fragment: Bailong and the Crimson Demon"

Mysteriously disappearing children. A “bird monster.” An unlikely appearance of Yui Shousetsu. In Edo ravaged by chaos, aspirants of the Waxing Moon, together with a new Rogue Rider Zhao Yun, join hands to fight against a new foe.