Which store in Osaka, Japan can I buy Shiroi Koibito chocolate?

Shiroi Koibito chocolate is produced in Hokkaido and can be purchased at many airports in Japan. You can find them everywhere in Osaka. There are snack shops selling snacks on Shinsaibashi, Namba, and Dotonbori streets, but I’m not sure which store sells them. But my impression is that there is a Takashimaya over Saibashi, and the supermarket on the ground floor sells it.

Shiroi Koibito Chocolate (or Shiroi Koibito) is a famous chocolate in Hokkaido. Produced by Stone House Confectionery Company. First sold in December 1976, it consists of two biscuits sandwiched with a layer of sweet white chocolate. Then there is the black chocolate flavor, which is sweeter and not as sweet as white chocolate.

There is a museum converted from a factory in Sapporo, which introduces the history and manufacturing methods of Shiroi Koibito Chocolate. It also collects historical tea sets from various countries and posters about chocolate. There is also the experience of making homemade Shiro no Lovers chocolate. There are also large-scale performances on the hour every day.