These are Kimetsu no Yaiba wafer seals! I used to collect them, but I've gotten into Frieren: Beyond Journey's End, and decided to sell them this time. m(_ _)m I hope you'll accept the fruits of my efforts! It's the popular Kimetsu no Yaiba! How about making your Kimetsu no Yaiba otaku debut today? Lol By the way, the seals are unopened♪ Thank you for looking.