The Vanished Kamuy Usami tells Kikuta that Ogata killed his half-brother, Lieutenant Yuusaku Hanazawa, during the Battle of Hill 203 to determine if his father, General Hanazawa, really loved him (see Episode 30). Usami then reminisces about how he and Ogata were both Tsurumi's pawns, with Ogata killing his father for Tsurumi, but this just made Usami more jealous of Ogata's closeness to Tsurumi. Meanwhile, Asirpa speculates that the Ainu name that her mother gave to her father, Aca, is somehow embedded in the code, but fears that if she finds the gold, Sugimoto will leave her...