Shouzou and Ine, an old married couple, are known to everyone as a pair of lovebirds. One day, they wake up to find they look like their younger selves! When Mino, their granddaughter, sees them, she's shocked by their transformation, and she's not alone!
Saitou-san, you're in the same year as me, 
but I didn't know that old couple were your...
،نحن في نفس السّنة الدّراسيّة يا سايتو-سان
...لكنّي لم أعلم أنّهما كانا
Ich hätte nicht gedacht, dass ihre Enkelin
eine Mitschülerin von mir ist!
Saitou, sé que estás en mi clase,
pero no sabía que esos abuelitos eran…
Saitou, sé que estás en mi clase,
pero no sabía que esos abuelitos eran…
J’ignorais
que tu étais leur petite-fille.
Siamo nella stessa classe, ma non sapevo
 che fossi la nipote dei coniugi Saito!
Saitou, você tá na mesma sala que eu,
mas eu nem sabia que aquele casal era seus avós...
Я и не знал,
что учусь с их внучкой…