An event for the anime "Takopi's Original Sin," based on the popular manga by Taizan5, which was serialized on Shueisha's manga app "Shonen Jump +," was held on December 22nd at Jump Festa 2025, held at Makuhari Messe (Mihama-ku, Chiba City), where the main cast was announced. It was revealed that Mamiya Kurumi will play Tacopi and Reina Ueda will play Kuze Shizuka, and Ueda made a surprise appearance.
Mamiya and Ueda have played the same roles in the original PV and voice comics, and will be reprising their roles. Ueda previously recorded the voice comic in which she played Shizuka about two years ago, and revealed that she felt nervous about playing the same character in the same work. She also said that she was often excited about what Shizuka would be like in the anime.
"Takopi's Original Sin" is Taizan5's debut serialization. It was serialized in "Shonen Jump +" from December 2021 to March 2022, and despite being a short serialization, it gained popularity, recording the highest number of views among works serialized at the same time. The story is about Tacopi, a Happy Alien who came to Earth and meets Shizuka, a girl who never smiles, and uses his magical Happy Gadgets to bring back Shizuka's smile.
The manga depicts the cruel reality of elementary school students, including bullying and problems with parents, and has become a hot topic, ranking third in the men's edition of "This Kono Manga ga Sugoi! 2023." Although the manga is only two volumes long, it is a shocking work that has sold over 1.4 million copies in total.
