Do you remember the game where Isumi played agains Mashiba in Ep 59? Yep, that's when the short-tempered Waya punched Mashiba in the face because Mashiba rattled Isumi. As you remember, Isumi was still an Insei and Mashiba was a Pro. In the Wakajishi cup, they played together and Isumi wins easily Mashiba. Here is the game record.
Black: Isumi White: Mashiba
Original Game Source: Date: September 21, 1981 Black: Shuzo Awaji 8d White: Satoshi Kataoka 6d 145 moves 5.5 Komi Black wins by resignation