so it really happened? or maybe it happened until he broke the wooden spoon and the rest was hallucination? WE NEED ANSWERS HERE... also where is my big boobed onee-san who melts icecream is her breasts and asks me to lick it
The broken spoon at the end suggests that the whole thing wasn't entirely a fantasy at least. Or maybe it could be that he did buy ice cream and the heat go to his noggin so bad that he hallucinated about eating ice cream with Onee-san when in reality there was no one there and he was just talking to the air.