I don't know little twin star! We often have Sanrio themes drinking cups and allsorts of merch in 7/11 but I'd suggest we have more Doreamon fans.
Do you have 'Line' app, as their own characters are also crazy popular here.
The wife's favourite though is definitely Rilakkuma.
I've been in Asia far too long haven't I? 555
RE: Cuteness overload at 7-11 in Taiwan