Takopi's Original Sin is a oNA (web) anime that premiered in summer 2025, produced by ENISHIYA.

About the production: the story comes from a manga, there are 6 episodes of about 23 minutes and its current status is "finished".

Its main genres are drama, psychological and sci-fi, with themes such as Denpa, Bullying, Primarily Child Cast and Aliens.

On AniList, Takopi's Original Sin has an average score of 86%, one of the highest scores on the site, and appears on 148,933 users' lists.

A Happy alien, Takopi, lands on Earth with one mission: to spread happiness! When he meets Shizuka, a lonely fourth grader, he vows to bring back her smile using his magical Happy Gadgets. But as he uncovers the pain in her life, Takopi learns that true happiness may require more than gadgets. (Source: Crunchyroll)

Official synopsis from AniList.