There’s a type of male character in Japanese romance that never goes out of style: the one who says one thing and does the exact opposite. The Duke’s Son Claims He Won’t Love Me Yet Showers Me with Adoration carries that concept in its title, and now it has a trailer, theme songs, and confirmed premiere date: July 4, 2026.

The opening is called “Itsuka Chanto.” (which translates to “Someday, as it should be”) and is performed by Riria., while the ending “Saishukai” is performed by sorato. Both songs can be heard in the trailer.

Voice Cast

• Yui Ishikawa as Elsa Eukrainen. (Known for Mikasa Ackerman in Shingeki no Kyojin and Violet Evergarden in Violet Evergarden).
• Soma Saito as Julius Royus. (Kenshin Himura in Rurouni Kenshin (2023) and Tadashi Yamaguchi in Haikyuu!!).
• Kaito Ishikawa as Jarmo Parnilla. (Tobio Kageyama in Haikyuu!! and Naofumi Iwatani in The Rising of the Shield Hero).
• Chika Anzai as Serafiina Parnilla. (Chisato Nishikigi in Lycoris Recoil and Reina Kosaka in Hibike! Euphonium).
• Hibiku Yamamura as Rebeka Rikkonen. (Known for Nagatoro in Don’t Toy with Me, Miss Nagatoro and Alice Asmodeus in Welcome to Demon School! Iruma-kun).
• Junya Enoki as Hannes Eukrainen. (Megumi Fushiguro in Jujutsu Kaisen and Nagi Taira in Tank Chair).
• Ryohei Kimura as Aleksis Josef Ralt. (Kotaro Bokuto in Haikyuu!! and Ryota Kise in Kuroko no Basket).
• Daisuke Namikawa as Lucas Eukrainen. (Hisoka Morow in Hunter x Hunter and Ulquiorra Cifer in Bleach).
• Maaya Uchida as Tanja. (Rikka Takarada in SSSS.Gridman and Hiyori Iki in Noragami).

Direction is by Hitoyuki Matsui at studio Zero-G, with Tomoko Konparu supervising the series scripts. Character design is by Yuko Yahiro, while music is by MICHIRU. Sound production is handled by Saber Links.

About The Duke’s Son Claims He Won’t Love Me

The Duke’s Son Claims He Won’t Love Me Yet Showers Me with Adoration is a manga by Kei Misawa and Natsu Mizuno that debuted on BookLive digital in February 2021. Flex Comix has published five volumes as of March 2026. The story follows Elsa, the daughter of a fallen aristocrat, who receives a surprising marriage proposal from Julius, a noble of the highest society. What Elsa doesn’t understand is why someone like him would choose her. After the wedding, Julius—who had been kind and gentle during courtship—suddenly changes his attitude and coldly declares that he has no intention of loving her. The problem is that his actions tell a completely different story, and that contradiction is exactly what drives the entire series.

Do you prefer Julius to eventually explain his reasons, or for the mystery of his behavior to be revealed only through his actions?