Crimson Recital (紅演, Koen) is Yoji Uruha’s innate sorcery. A Lifelong Contract shuts it off while he holds Kumeyuri. When Samura cuts Uruha down at Senkutsuji, the scene reads as murder and a Hishaku pact. It is Suzaku used as surgery: the contract dies, the man walks, the old art limps back. Physical boost. He later spends it protecting Hakuri from Hishaku assassins.
Not Banquet
Banquet and Play are Kumeyuri. Koen is Uruha. The technique catalog mentioned the distinction in a clause. Reddit threads still mix them. This page keeps the person under the oiran sword. See Uruha, Kumeyuri, contracts.