Hi there! This entry will be picture heavy as I have uploaded most of my food and purchases in Japan. Kansai area (Osaka, Kyoto etc) is famous for street food like okonomiyaki, takoyaki, yakitori and many others. I was on a budget so I did not try luxurious food like kaiseiki, kobe beef, wagyu beef, fugu (pufferfish) and many more.
I also did not enter into any discount store like 100 Yen Shop or Daiso coz it is very common at my homeland however you should coz who knows they have more special things that you can't find in our local Daiso. Hence without further a do here are some of the recommended stuff I have eaten and bought in Japan.
Update: I received alot of inquiries regarding where to buy Kracie Popin' Cookin' in Malaysia. Do scroll down and read more to find out where and the price.
Okonomiyaki
Osaka is the birth place for this cuisine so you definitely wouldn't wanna miss out. Okonomiyaki is a savoury pancake that consists of batter, egg, vege and meat/seafood. It is usually topped with otafuku/okonomiyaki sauce, aonori flakes (seaweed), bonito flakes (smoked tuna), mayonnaise and beni shoga (pickled ginger). Okonomiyaki types tend to differ according to region like in Tokyo is smaller than the ones in Kansai.