There are many different trophies and achievements that you can unlock within (YK) Yakuza Kiwami, one of which is Perfectionist.
Perfectionist requires players to complete 100% of the Completion List. In order to do that you will need to complete several requirements and certain sections of that said list, one of which involves Shogi.
Now unlike where you will have to play Shogi alone in order to get the No Knock Back win, a guide for which can be found here
This time we will have to face Majima and beat him at Shogi. Majima will randomly appear at certain Shogi stores and after beating him a few times to level up his meter.
Anyway here is a quick guide on how to defeat the Mad Dog at Shogi..
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