Ensemble Stars postcard & sticker set
This is a promo set of postcards for The ensemble Stars game from Happy elements. It also includes a pair of stickers.
The postcards featuring Undead and Knights are copyright 2014.
The postcard featuring Unit Undead Rhythm Link with Adonis, Rei, Kaori, and Koga are copyright 2019.
The stickers do not have a dated copyright but they are copyrighted Happy Elements K.K and bukub okawa.