Detective Conan: Heiji and Kazuha Finally Become a Couple After 28 Years

After 28 years of waiting, Detective Conan characters Hattori Heiji and Toyama Kazuha have officially become a couple. The long-awaited romance was confirmed in manga volume 106, titled The Crimson Closing Day (The Final Show), and concurrently in the anime series, as reported by detikcom and Medcom.id.

The milestone moment unfolded in Osaka, Japan, where Heiji confessed his feelings to Kazuha on the Naniwa Harukas observation deck after solving a case. Both detikcom and Medcom.id note that the scene features the characters walking away hand in hand while Mai Kuraki’s song Togetsukyo (Kimi Omofu) plays in the background. Ran Mouri and Kazuha’s mother, Sakura Toyama, witnessed the confession.

Decades of Slow-Burn History Before the Naniwa Harukas Confession

Heiji Hattori, a high school detective from Osaka and a rival to Shinichi Kudo, shares a childhood friendship with Kazuha Toyama that dates back decades. According to detikcom, Kazuha first appeared in the anime in 1998, initiating a prolonged dynamic where the two characters frequently came close to expressing their feelings without sealing the relationship.

Prior near-misses documented in the series include episode 121, The Night Before the Wedding Locked Room Case, where matching striped outfits failed to spark a confession, and episodes 652 through 655, where Kazuha planned to confess following a solved case only to be sidetracked by Heiji focusing on Shinichi Kudo, as detailed by detikcom.

Citywide Celebrations Across Osaka Mark the Official Romance

The fictional milestone triggered physical celebrations across Osaka to mark the 30th anniversary of the Detective Conan anime at HARUKAS 300, according to Medcom.id. Abeno Harukas installed special footprint markers where Heiji and Kazuha stood, and the observation deck elevators began playing a custom track written by Gosho Aoyama starting October 11, 2026, as reported by detikcom.

Medcom.id added that public displays expanded throughout the city, including promotional trucks bearing “Heiji ❤️ Kazuha” traveling through Umeda, Shinsaibashi, and Namba, alongside a branded boat sailing on the Dotonbori River past the Ebisubashi Bridge.

Scheduled Advertising Routes Through Mid-October

Public activations continue on the streets of Osaka as promotional schedules unfold. Advertising trucks carrying the “Heiji ❤️ Kazuha” campaign are slated to operate through October 17, 2026, concluding the current round of real-world celebrations tied to the manga and anime milestone.