JK to Ero Konbini Tenchou Episode 0634
Kanna is a impertinent JK, Yui is a serious daughter. Two are cousin younger sisters with a good relation. Kanna without the relative is taken care of in a house of the Yui and works part-time with Yui in the convenience store which an uncle is employed incidentally and does a manager. In the shocking event that happened in such part-time job, kanna-chan receive it.