An Oldman in Counterworld.Jiisama ga Iku; じい様が行く; An Oldman in Counterworld.; Grandpa is Summoned; An Old Man Goes; Grandpa Will Go; Старик в параллельном мире; 爺爺去了異世界

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 is wisdom of an old man and “assistance magic,“ he is able to live a leisurely life in his new home.