Nagatan to Ao to: Ichika no Ryōrichō

Nagatan to Ao to: Ichika no Ryōrichō (ながたんと青と－いちかの料理帖－) is a Japanese manga series written and illustrated by Yuki Isoya. It began serialization in Kodansha's josei manga magazine Kiss in October 2017.

Manga
Written and illustrated by Yuki Isoya, Nagatan to Ao to: Ichika no Ryōrichō began serialization in Kodansha's josei manga magazine Kiss on October 25, 2017. The series' chapters have been collected into twelve tankōbon volumes as of June 2024.

Drama
A live-action television drama adaptation was announced on October 5, 2022. The series was directed by Sōshi Matsumoto, with scripts written by Izumi Kawasaki and music composed by Gen Tanabe and Rachel Abstract. It starred Mugi Kadowaki and Ryuto Sakuma in lead roles. It aired from March 24 to May 26, 2023 on Wowow and aired for 10 episodes.

Reception
The series has been nominated for the 48th Kodansha Manga Award in the General category.