Oh my gosh. I dislike Pepsi, but I did love trying out whatever gimmick Pepsi Japan was trying next. I just wish I was in Japan for this one!
Watermelons are frequently eaten with salt in Japan - I never quite figured this one out, as I wasn't in the company of Japanese people the few times I did have watermelon there, and I don't much care for salt, personally. It's an exciting flavour, though; one that I'd like to try!