Nanatsu-iro★Drops is a tV series anime that premiered in summer 2007, produced by diomedéa.

About the production: the story comes from a visual novel, there are 12 episodes of about 24 minutes and its current status is "finished".

Its main genres are fantasy, mahou shoujo and romance, with themes such as Magic, School, Female Protagonist and Urban Fantasy.

On AniList, Nanatsu-iro★Drops has an average score of 66%, a good score, and appears on 4,445 users' lists.

Tsuwabuki is a normal student, though not very social. One day he meets a new transfer student, named Sumomo Akihime, and another girl, both the only members of the gardening club. Tsuwabuki is forced by a teacher to join this club. But then he bumps into a strange guy with dog ears, switching his drink with they guy's by mistake. Drinking it, he is turned in a stuffed animal. The teacher tells him that the only way to turn back to normal is to find the chosen girl and let her catch the seven stardrops. This girl is Sumomo, that accepts to help him, though she's not allowed to know the animal's true identity. (Source: Anime News Network)

Official synopsis from AniList.