Though I'm not sure if this is the exact steps but anyways

"ask him what that is"

"just leave it quietly in the bag"

"tell him it was amazing magic"

"pull bato close"

"pick up them salmon and potato cube skewers"

and the last one is "what's wrong with being strange?"

Those are the ones I've tested out for different results and those are the important choices for the last cg for Bato i believe. I tried different ones and most of the options doesn't affect the affinity nor understanding of Bato.