Grandpa and Grandma Turn Young Again

• Ja Kanji — じいさんばあさん若返る • Ja Romaji — Jīsan Bāsan Wakagaeru • Genre — Romantic comedy

• Type — manga • Author — Kagiri Araido • Publisher — Media Factory • Imprint — MF Comics • Magazine — * Monthly Comic Alunna • (July 13, 2022 – June 15, 2024) • First — October 26, 2019 • Volumes — 9

• Type — TV Series • Director — Masayoshi Nishida • Writer — Yukie Sugawara • Music — Tomoki Hasegawa • Studio — Gekkou • Licensee — * Crunchyroll (streaming) • Network — AT-X, Tokyo MX, KBS Kyoto, SUN, BS11, RAB • First — April 7, 2024 • Last — June 16, 2024 • Episodes — 11

• Portal — yes Grandpa and Grandma Turn Young Again is a Japanese manga series written and illustrated by Kagiri Araido. It began serialization on the author's Twitter and Pixiv accounts in October 2019 and ended in June 2024. The series resumed serialization on the author's Twitter and Pixiv in July 2025. It later received parallel serialization on Media Factory's Monthly Comic Alunna magazine in July 2022. An anime television series adaptation produced by Gekkou aired from April to June 2024.

The story follows the elderly couple Shozo Saito and Ine Saito, who live in Hirosaki, Aomori Prefecture. One day, while checking their apple farm, they notice a golden apple growing in one of the trees. After eating that apple, the two found themselves physically restored to their 20s.

• Shozo Saito • Shin-ichiro Miki (voice comic, anime) • Husband of Ine. He has lived a fulfilling life with his wife Ine, but finds himself disappointed that he couldn't treat her more extravagantly. A dream suddenly becomes a reality when he finds himself turning young again. • Ine Saito • Mamiko Noto (voice comic, anime) • Wife of Shozo. She is happy with her life with her husband, though wishes she could spend more time with him since she had gotten sick in the past, causing them to miss out on going on trips and a honeymoon. Like her husband, she finds herself suddenly turning younger one day. • Mino Saito • Shiori Mikami • Shozo and Ine's granddaughter. • Shiori Saito • Nao Tōyama • Shozo and Ine's other granddaughter, and Mino's cousin. • Shōta Igarashi • Junta Terashima • Mino's classmate who has a crush on her. He later marries her and becomes her husband after her grandparents' passing at the end of the series. • Yoshiaki Saito • Kazuyuki Okitsu • Shozo and Ine's son, Kaede's husband and Mino's father. He has a more serious demeanor compared to his joyful father. • Kaede Saito • Tomo Sakurai • Shozo and Ine's daughter-in-law and Mino's mother. • Satoshi Takahashi • Shōhei Kajikawa • A senior classmate of Shiori, who's also studying to get into the medical department. He later marries Shiori and becomes her husband after her grandparents' passing at the end of the series. • Hajime Takahashi • Nobuyuki Hiyama • Satoshi's grandfather. He and his wife also mysteriously turned young much like Shozo and Ine. • Setsu Takahashi • Yū Kobayashi • Satoshi's grandmother. She and her husband also mysteriously turned young much like Shozo and Ine.

Written and illustrated by Kagiri Araido, Grandpa and Grandma Turn Young Again began serialization on Araido's Twitter and Pixiv accounts on October 26, 2019, and ended on June 15, 2024. It later began parallel serialization on Media Factory's Monthly Comic Alunna magazine on July 13, 2022. Araido resumed serialization of the series on Twitter and Pixiv on July 4, 2025, with the new chapters occurring "around volumes 4 and 5." Media Factory compiled the series' chapters into tankōbon volumes. Eight volumes were released from June 22, 2020, to June 21, 2024. A ninth volume was released on March 17, 2026.

An anime television series adaptation was announced on August 9, 2023. It is produced by Gekkou and directed by Masayoshi Nishida, with Yukie Sugawara handling series composition, Nagisa Takahashi designing the characters, and Tomoki Hasegawa composing the music. The series aired from April 7 to June 16, 2024, on AT-X and other networks. The opening theme song is "Kimi ga Ojīchan Atashi ga Obāchan", performed by Koresawa, while the ending theme song is 4="Married for Life Yo-Yo!!", performed by Shin-ichiro Miki and Mamiko Noto. Crunchyroll streamed the series. Plus Media Networks Asia licensed the series in Southeast Asia.