Daikichi Maekawa, an ordinary office worker. The last night of 34 years old was supposed to be too mediocre as usual and the morning of 35 years old. However, an old man who claims to be his ancestor suddenly appears at the bedside, telling him that he has three options for how to live his life in the future. After worrying, Daikichi chose to live in a different world of swords and magic.
