On October 18, 2021, Avex announced that Tohoshinki would be returning to the Japanese music scene with three consecutive releases starting December 2021.

[6] Avex released snippets of each track every day starting March 5, 2022, through Tohoshinki's official Twitter account.

[8] On March 12, a music video teaser of the EP's lead single "Epitaph (For the Future)" was released.

[9] A television advertisement for the EP's release, which also featured an extended snippet of the lead single, was revealed on March 14.

[10] From March 14 to 20, promotional images of Epitaph were posted at the Metro Promenade in the Shinjuku Station.

[14] Epitaph debuted at number two on the daily Oricon Albums Chart on the first day of release, selling 24,884 copies.

[15] It entered the Oricon Albums Chart at number three, with 36,038 copies sold on the first week for release.