Mashin Hero Wataru: The Seven Spirits of Ryujinmaru is a oNA (web) anime that premiered in spring 2020, produced by Sunrise.

About the production: the story comes from a other, there are 9 episodes of about 20 minutes and its current status is "finished".

Its main genres are action, adventure, comedy, mecha and sci-fi.

On AniList, Mashin Hero Wataru: The Seven Spirits of Ryujinmaru has an average score of 54%, an average score, and appears on 587 users' lists.

The franchise continues in or follows from: Chou Mashin Eiyuuden Wataru.

Series protagonist Wataru, who goes to the world Soukaizan in response to a call about an incident there. An evil presence shrouds the area, and the robot Ryuujinmaru's power has been sealed. Together with his friends Shibaraku, Toraou, and Himiko, Wataru begins a new journey. (Source: Anime News Network)

Official synopsis from AniList.