This just keeps getting better and better. I am definitely enjoying it more and more as the story progresses. I have a feeling that they'll start to have problems pretending that they don't like each other quite a bit sooner than expected.
Tsundere
Btw it feels really weird. They are acting so natural, it seems like they are friends since childhood or something. Btw accidental kiss next chapter?
NB, the type of pumpkins you see in East Asia often have green skin, so the pumpkin-watermelon comparison is more natural than it seems if you are used to yellow-orange pumpkins.