Darling In The Franxx Merch As a result of the positive response from both Japanese and Western audiences, Darling in the FRANXX Merch is available. Fans can find shirts, stickers, mugs, and other memorabilia inspired by the series. Many merch designs feature the series' main characters. Some fans have even designed their own products based on their favorite characters and the series' themes. Whatever the case, you'll find a shirt that represents the characters on your list.