Deaimon

The series is set in a Kyoto wagashi store. The protagonist is an only son, Nagomu Irino, who has dreams of becoming a member of a band, and ran away from home to live in Tokyo ten years ago. He receives a letter from home stating his father is in the hospital and asking him to take over the family shop, so he gives up on his dream and returns home. While he's been gone, however, a ten-year-old girl named Itsuka Yukihira has started working in the shop. Nagomu's mom, having become a foster mom to Itsuka during the time that Nagomu was seeking his dream as a band member, declares that there will be a contest between Itsuka and Nagomu to see who will take over the family shop.

Nagomu Irino (納野 和, Irino Nagomu) Voiced by: Nobunaga Shimazaki The protagonist. After graduating from college, Nagomu left Ryokushō (緑松)—the family wagashi store—in order to pursue his dream of becoming a musician in Tokyo. When his father was hospitalized ten years after he left, Nagomu returned home to work in the family store. Itsuka Yukihira (雪平 一果, Yukihira Itsuka) Voiced by: Kozue Yūki A hardworking girl who lives at Nagomu's parents' home. Ten years old at the beginning of the story. She has been living in the Irino home for the past year, receiving room and board for helping out in the store. Nagomu's father wants her to inherit the store, and she's declared she won't lose the shop to Nagomu, the rightful heir to the store. Heigo Irino (納野 平伍, Irino Heigo) Voiced by: Rikiya Koyama Nagomu's father. The owner of Ryokushō. Fuki Irino (納野 富紀, Irino Fuki) Voiced by: Sayaka Ohara Nagomu's mother. Masa Tatsumi (巽 政, Tatsumi Masa) Voiced by: Hiroshi Iwasaki Auntie Otsuru (お鶴さん, Otsuru-san) Voiced by: Satsuki Yukino Saki Seto (瀬戸 咲季, Seto Saki) Voiced by: Takuma Nagatsuka Mitsuru Horikawa (堀河 美弦, Horikawa Mitsuru) Voiced by: Minori Suzuki Kanoko Matsukaze (松風 佳乃子, Matsukaze Kanoko) Voiced by: Minami Takahashi Hiiro Kisaichi (私市 緋色, Kisaichi Hiiro) Voiced by: Saori Hayami Shinri Yukihira (雪平 真理, Yukihira Shinri) Voiced by: Maaya Sakamoto Itsuka's mother. Tomoe Yukihira (雪平 巴, Yukihira Tomoe) Voiced by: Yoshitsugu Matsuoka Itsuka's father. Masayo Irino (納野 倭世, Irino Masayo) Voiced by: Miho Yoshida Nagomu's grandmother. Ikkō Irino (納野 一光, Irino Ikkō) Voiced by: Izō Oikawa Nagomu's deceased grandfather.

Deaimon is written and illustrated by Rin Asano. It began serialization in Kadokawa Shoten's seinen manga magazine Young Ace on May 2, 2016, and has been collected in twenty tankōbon volumes from Kadokawa Comics Ace as of November 2025.

An anime adaptation of the manga was announced on April 20, 2021. It was later confirmed to be a television series produced by Encourage Films and directed by Fumitoshi Oizaki, with Reiko Yoshida overseeing the series' scripts, Sakae Shibuya designing the characters and serving as chief animation director, and Ren Takada composing the music. It aired from April 6 to June 22, 2022, on AT-X and other networks. The opening theme song is "Sumire" by Maaya Sakamoto, while the ending theme song is "Koko ni Aru Yakusoku" by the special unit Deaimon. Crunchyroll streamed the series.