Let's Fight, Boys - S1.E12

The Midsummer's Knights infiltrate an underground ring in search for Baku, the last of the missing Design Children, who is being forced to fight illegal matches for the Yakuza. Amara breaks into the ring and confronts Baku in an attempt to have him remember his past, but is surprised when he refuses. However, neither Amara nor his other companions intend to give up so easily on drawing him back to their side.