Joke may not be apparent, but when you buy the drink in Japan, you get a tiny little Madoka character phone charm. You can of course guess what Kyouko and Homura are buying here.
Lawson is releasing phone straps of us as a promotion.
Lawson = a convenience store franchise.Huh, then shall we go buy them after school?It's so cute!I... I'd like the one with this blue girl, please.Shall we buy 3 each, then?Gravity tea
Probably parody of an actual commercial product 十六茶. 16Tea十六茶(Jyuuroku-cha) and Gravity tea重力茶 (Jyuuryoku-cha) sound pretty similar.The 16Tea hunters
十六茶 (16 tea, literally) is a bottled tea product from Asahi.I'll buy every one with the pink girl! Bring out the ones in your storage, too!