This collaboration commemorates Gachapin Mook's 40th anniversary this year. Three types of designs are available, with each flavor of "Nacchan" "orange", "apple", and "grape" labeled as Gachapin Mook.
Also, from September 3rd, a campaign to win the "original mug" of Gachapin Mook will be held. If you access the campaign site and enter the serial number printed on the sticker attached to the target product, 3,000 people will win the "original mug set of 2" by lottery. Applications are open until November 29th.