[Like father like son, which means he Absolutely Stressed.] You don't enjoy your birthday? [he asks, as timing rather unfortunately made it difficult to ever get that fact despite getting the actual date- Perhaps 'Haruno' also disliked his birthday. He probably should have guessed, if that were the case then.] Would you prefer I not celebrate it then? I can certainly refrain from doing so if it would be more comfortable for you-

Oh- [And yes, sitting- naturally he'll gesture for the living area.] Of course! Shall I put together a pot of tea for us?