Suika

I was supposedly going to bed, but then I found this... Check it out.
And I wonder... do they taste different from normal watermelons?
What would be a reason to buy one of these instead of a round one? Would it be that it's easier to stack in the fridge?
It's a completely different dimension, I tell you. I hope I don't go nuts if I go there, overwhelmed by so much tomorrow today.