Grandpa and Grandma Turn Young Again

おじいさんとおばあさんが若返った話。

Shouzou and Ine Saitou are a long-married couple settled into their quiet life in Hirosaki when they wake up one morning in the bodies of twenty-year-olds. Their temperament is unchanged — the same steady, devoted pair they have always been — but their family and neighbors can't reconcile the grandparents they know with the two young strangers standing in their house.