Japan’s top 10 anime for summer 2025 have been revealed, with Takopi’s Original Sin leading the official ranking on domestic streaming platform Niconico. The ranking is based on views, comments and title accesses collected since 14 July 2025.
Takopi’s Original Sin, produced by Studio Enishiya, is an adaptation of Taizan 5’s manga series. The anime follows Shizuka, a young girl facing bullying at school, who meets the extraterrestrial Takopi from Happy Planet.
Using devices called “Happy Gadgets”, Takopi aims to cure Shizuka’s sadness, and after a tragic event, decides to travel back in time to prevent it. Niconico comments noted the series’ emotional impact, with one viewer writing, “It was too heavy to watch alone.”
Second in the ranking is Dandadan, an action, comedy and supernatural horror series featuring Momo Ayase and Ken “Okarun” Takakura as they confront aliens and yokai spirits. Viewers praised its fast-paced start to season two, with one user stating, “It’s going full speed right from the start.”
My Dress-Up Darling season two secured third place, focusing on the cosplay-themed connection between Wakana Gojo and Marin Kitagawa. Niconico comments reflected on the series’ exploration of Gojo’s past, with reactions including, “This really hits home.”
The remainder of the top 10 includes Bad Girl, Secrets of the Silent Witch, Hell Teacher Nube (2025), Ruri Rocks, Detectives These Days Are Crazy!, Puniru Is a Kawaii Slime season two and Ruler’s Crown.
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