We saw this Dagashi in the episode 11 of Kashi Dagashi, so we wanted to try. In this episode, a boy enters the dagashi store with a girl and wants to buy 2 cola gum. Unfortunately he has enough money only for one chewing gum, i.e. 10 yens. The boy hopes to get a chewing gum with writing Winner on the packaging setback to gain a second chewing gum free. In the end,he will havehis second free cola gum even if he did not win because the Kokonutsu's father (the owner of the store Dagashi) pretended that the little boy had won.
So we tried our luck and also bought 2 cola gum (just in case lol). But we have not won anything at all, just a Japanese game drawn on the packaging. The chewing gum in itself is nothing special, it has the taste of cola. This taste do not last very long but for 10 yens, children like it as it is.