A Story About a Grandpa and Grandma Who Returned Back to Their Youth season 1 episode 4
Episode title: Grandpa and Grandma and the Culture Festival
At Mino's invitation, Shouzou and Ine decide to go to the culture festival at her school. Once there, an accident causes Ine to have to change clothes. When she puts on a sailor-style school uniform, she reverts to mannerisms she used in her school days.
