Peddler in Another World

After leaving his toxic job, Shiro Amata inherits his grandmother's house and uncovers her secret: she was a witch from another world. He discovers a portal in her closet and gains an incredible ability called "Equivalent Exchange," which allows him to convert money between worlds. Armed with this skill, Shiro sets out to sell everyday items to the vibrant inhabitants of the other world, aiming to amass a fortune and escape the grind of traditional work forever.