Photo/Illutration One of the “Demon Slayer” mailboxes features Tanjiro Kamado, the main character, in the Minami-Ikebukuro district in Tokyo’s Toshima Ward. (Satoru Eguchi)

Japan Post Co. set up three mailboxes decorated with characters from the hugely popular “Demon Slayer: Kimetsu no Yaiba” manga and anime series in Tokyo's Ikebukuro district on Dec. 13.

The decorative mailboxes are designed to celebrate the new year and coincide with the company starting to accept New Year's cards on Dec. 15.

Each one features different characters from the comic accompanied by messages welcoming the new year ahead.

The one set up near Ikebukuro Station in the Minami-Ikebukuro district shows an illustration of Tanjiro Kamado, the main character of the manga. His message, “Let’s totally concentrate on celebrating the new year!” also adorns the mailbox themed after his character.

The one featuring Kyojuro Rengoku, a major supporting character, was set up at the Toshima post office in the Higashi-Ikebukuro district. His image is accompanied with a characteristically fiery comment, “Burn your heart in the new year again!”

The last one, found on the street of the Sunshine 60 skyscraper complex in Higashi-Ikebukuro, features Tengen Uzui, another major supporting character, along with the text, “Things will be really flashy next year, too!”

Passers-by stop to take photos of the novel mailboxes with their smartphones.

Japan Post is selling “Demon Slayer” New Year's cards as well, featuring four different illustrations.

Three cards with the same illustration can be bought together for 660 yen ($5.80), including tax. They can be purchased online or at major post offices across the country.