Peddler in Another World: I Can Go Back to My World Whenever I Want!

When Shiro Amata discovers his grandmother's closet doubles as a doorway to another world, he does what any reasonable person would do: set up a business selling useful items from Japan to the locals! Based on the light novel of the same name.

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いつでも自宅に帰れる俺は、異世界で行商人をはじめました