Back-to-school season is getting the punk rock treatment. As a follow-up to Forever 21’s viral Barbie collection, the brand is back this month with another throwback fave: Hello Kitty & Friends.

Hello Kitty and her Sanrio pals have been the queens and kings of kawaii for years, and the characters epitomize the very concept of innocence. Now, however, a new series of plushies and other items ...