Hey Sensei, Don't You Know?

Hey Sensei, Don't You Know? (ねぇ先生、知らないの？) is a Japanese manga series by Aya Asano. Hey Sensei, Don't You Know? is serialized in the shōjo digital monthly manga magazine Premier Cheese! beginning on November 5, 2018. The series was later moved to the print monthly magazine Cheese! beginning on September 24, 2020, where it ran until its conclusion on October 24, 2022. A live-action television drama adaptation was broadcast from December 6, 2019, to January 17, 2020, as the fifth entry to MBS TV's programming block Drama Tokku.

Plot
Hana Aoi lives a busy life as a shōjo manga artist, leaving herself with no time to focus on her personal life and relationships. While visiting an upscale salon, she meets Riichi Kido, a popular beautician, who offers to cut her hair. Riichi falls in love with Hana at first sight and asks her if they could be in a relationship. Having no boyfriend before, Hana accepts, and throughout their relationship, she learns how to face challenges between balancing both work and relationships.

Characters

 * Hana Aoi (青井 華)
 * Hana is a popular shōjo manga artist. Her job keeps her busy to the point where she is unable to focus on her personal life. Baba described her as "clumsy" with a "[tendency] to prioritize her work."
 * Hana is a popular shōjo manga artist. Her job keeps her busy to the point where she is unable to focus on her personal life. Baba described her as "clumsy" with a "[tendency] to prioritize her work."


 * Riichi Kido (城戸 理一)
 * Riichi is a beautician who is popular at the salon he works at, and he falls in love with Hana at first sight. Akaso described him as "loyal, honest, having tolerance, and a very cool guy."
 * Riichi is a beautician who is popular at the salon he works at, and he falls in love with Hana at first sight. Akaso described him as "loyal, honest, having tolerance, and a very cool guy."


 * Nanase Hoshino (星野 七瀬)
 * Nanase is a famous young actress and a big fan of Hana's manga series. She has been in love with Riichi for a long time.
 * Nanase is a famous young actress and a big fan of Hana's manga series. She has been in love with Riichi for a long time.


 * Asahi Kiritani (桐谷 朝陽)
 * Kiritani is Hana's editor.
 * Kiritani is Hana's editor.


 * Jun (潤)
 * Jun is Riichi's co-worker who greatly admires him.
 * Jun is Riichi's co-worker who greatly admires him.

Manga
Hey Sensei, Don't You Know? is written and illustrated by Aya Asano. It was first serialized in the shōjo digital monthly manga magazine Premier Cheese! from the December 2018 issue released on November 5, 2018. The series was transferred to Cheese! beginning with the November 2020 issue released on September 4, 2020, and ran until the its conclusion in December 2022 issue released on October 24, 2022. The chapters were later released in ten bound volumes by Shogakukan under their Flower Comics Alpha imprint.

Television drama
A live-action television series adaptation was announced on November 3, 2019, as the fifth entry to MBS TV's late-night Thursday television block, Drama Tokku. The series aired on MBS TV from December 6, 2019, to January 17, 2019, for 6 episodes. Other broadcasts include TV Kanagawa, Chiba TV, and TV Saitama.

The series stars Fumika Baba as Hana and Eiji Akaso as Riichi. To prepare for the drama adaptation, Baba had to learn how to hold a pen properly to draw, while Akaso took a brief course in hairdressing. Additional cast members include Masanari Wada as Kiritani, Honoka Yahagi as Nanase, and Super Dragon member Tsuyoshi Furukawa (actor) as Jun. Milk (musical group) member Ryūbi Miyase and Nankin Pepper member Hazuki Tanda play two original characters created for the drama, Koinuma and Makoto respectively, who are Hana's manga assistants.

The drama adaptation is directed by Keijirō Tsubakimoto and Tatsuya Aoki, with Smith (director) as the supervising director and Yuko Shimoda in charge of the script. The opening theme song is "Sunny" by MaRuRi and Ryuga, and the ending theme is "Love" by Bolbbalgan4.

Reception
The Television reported that on Premier Cheese!, the manga was downloaded 250,000 times within five months.