He essentially subverted the gag. Now it's a surprise when people DO actually see them as a couple instead of just siblings or whatever.
Papa, mama, thank youCome on, thank themPapa and mamaDo something good to receive something good in return...was what Kumada thoughtSay thanks to this future papa and mamaN-No problem, it's okay, I want to become a mother someday!Ah sorry, do you not have that kind of relation perhaps...?