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Grandpa is Summoned

The story centers on 73-year-old Seitarō Asao, who runs a tea plantation. Due to a god's mistake, he gets transported to another world in the place of his grandchild. He then starts a second life 10 years younger as 63-year-old Seitarō. Through his wisdom of an old man and "assistance magic," he is able to live a leisurely life in his new home.

Adventure
Comedy
Fantasy
Isekai
Shounen