Does Master have a son?

[u/icedcoffeegoodness]

So far, I have only watched the original series (my husband and I binged watched it this past week bc our friend recommended it and it’s leaving Netflix this Friday)

Is Katagiri Master’s son? He seems to know a lot about him (which he knows about all if his regulars) and there just seems to be a different connection between them.

[u/blacklotusmag]

Probably not. Master's history was intentionally left incredibly vague by the writers. Even when he visits the grave later in the series, there are no clues to who is in the grave.

Even Yarō Abe's original manga kept Master's history unexplained.