Cannon Busters
English name: Cannon Busters
Genres: Action, Adventure, Fantasy, Sci-Fi
Type: ONA, Episodes: 12
Aired: Aug 15, 2019
Studio: Satelight, Yumeta Company
Source: Other
Rating: R - 17+ (violence & profanity)
Synopsis:
Follow the adventures and exploits of S.A.M, a high-end, royal-class friendship droid who's joined by a quirky, discarded maintenance robot and a brash, deadly fugitive. Together, the unlikely trio embarks on an unforgettable journey in a fantastic and dangerous world in search of S.A.M's best friend, the heir to a powerful kingdom under siege.

(Source: Official Website)