The manga is a comedy spinoff of LINK and SAVAN’s World’s End Harem: Fantasia (Shūmatsu no Harem: Fantasia) manga, itself a fantasy setting spinoff of LINK’s World’s End Harem manga.
Seven Seas also licensed the World’s End Harem: Fantasia Academy manga for its Ghost Ship adult imprint.
Seven Seas Entertainment announced on Wednesday that it has licensed The Weakest Tamer Began a Journey to Pick Up Trash light novels and manga, and the I’m a Terminal Cancer Patient, but I’m Fine. manga.
Honobonoru500 began serializing The Weakest Tamer Began a Journey to Pick Up Trash story in the Shōsetsuka ni Narō website in November 2018, where it is still ongoing.