Popular character Blue Lock postcard set. - Series Name: Blue Lock - Character Name: Mikage Reo - Character Name: Hachiraru Kai - Character Name: Isagi Yoichi - Character Name: Nagi Seishiro - Character Name: Itoshi Rin Thank you for looking. These are bonus items that were included with books during the first anime season. They were stored individually in bags in a dark place. They will be shipped with protection against moisture and bending.