Regardless of the Covid-19 pandemic, the market for face masks in Japan is enormous and has been so for decades. Between common cold and the various strains of flu and allergies, such masks are a standard accessory for any Japanese from the time they are old enough to go to kindergarten. The Demon Slayer Retro Japanese Pattern Face Mask series is a lineup of masks made of polyester and polyurethane, and featuring the colors inspired by some of the heroes of the Demon Slayer: Kimetsu no Yaiba manga and anime franchise.
Because the series takes place in prewar Japan, the patterns for each of the seven masks reflect the trends of the period. They are mostly geometric, vintage patterns but there is also a fire one, based on the cape of demon slayer Kyojuro Rengoku, and even the characters for the prayer Namu Amida Butsu from the jacket of the demon slayer Gyomei Himejima.
The Demon Slayer Retro Japanese Pattern Face Mask features: