Uncle From Another World Vol. 1

Takafumi Takaoka’s uncle has just woken up from a 17-year coma, and, surprisingly, he starts speaking in a strange language and keeps insisting that he was living in another world called Granbahamar for the entire time of his coma. After first, Takafumi thinks he has just gone crazy, but after witnessing his uncle perform magic firsthand, he begins to believe and suggests that his uncle use his ability to make a living as a YouTuber. So begins an original take on the isekai trope about a young boy and his otherworldly uncle!
Notice: This book is written in Japanese.