After quitting his job at a toxic company, Shiro Amata moves into the house his grandmother left him in her will. There, he soon makes two life-changing discoveries: one, his grandmother was really a witch from another world, and two, said other world is just on the other side of her closet door! Thanks to a book she left for Shiro, he also manages to obtain an all-powerful skill called "Equivalent Exchange," which allows him to turn money from his world into otherworldly currency and vice versa. With this, Shiro decides to set up shop and sell convenient items like matches to the colorful inhabitants of the other world. His plan: make a massive profit on the goods he brings from home to become so rich that he never needs another job ever again! (Source: J-Novel Club)

Itsudemo Jitaku ni Kaereru Ore wa, Isekai de Gyoushounin wo Hajimemashita began as a web novel on Shousetsuka ni Narou on June 13, 2019. Hobby Japan has released a revised and illustrated version of the series on April 22, 2020 under its HJ Novels label. The series has been published digitally in English as Peddler in Another World: I Can Go Back to My World Whenever I Want! by J-Novel Club since December 6, 2022.