The main characters of this anime are Takeshi and Hana. Takeshi and Hana, who have been married for many years, are struggling with health problems associated with old age. One day, while walking in the forest, they encounter a mysterious light. After being exposed to this light, both of them suddenly become young again.

As Takeshi and Hana adjust to their rejuvenated lives, they also attempt to rectify the mistakes they made in the past. Simultaneously, they begin to investigate the source of this mysterious light and why it was sent.

"Grandpa and Grandma Turn Young Again" is directed by Taro Yamada. The screenplay is written by Michiru Akashi. The anime is produced by Studio Comet.

The release date of the anime has not been announced yet. However, trailers and visuals of the anime have begun circulating on the internet. From the first trailer, it is evident that the anime combines comedy and drama genres.

"Grandpa and Grandma Turn Young Again" has managed to capture the interest of anime viewers with its unique storyline. As the release date of the anime approaches, more information and visuals are expected to be published.