Percival tries to discus the romantic undertones in his and Credence's relationship, but Credence misunderstands this as Graves wanting a father/son relationship. Cue Credence calling Graves 'daddy' a lot and Graves' frustration about that.

+ Graves being Credence's legal guardian (or adopted father?)
+ Credence getting a lot of hugs and/or sitting in Graves' lap.

Up to filler whether said frustrations are worked out on his own or with Credence.