Pony Canyon has released a teaser trailer for the upcoming Under Ninja anime adaptation that is due to premiere in 2023.
Although described as a trailer for the anime, the video resembles a motion comic-style preview of the manga instead with no proper animated footage.
Under Ninja is based on the manga by Kengo Hanazawa, which began in 2018 and has eight tankoubon volumes as of August 2022. It is serialized in Kodansha’s Young Magazine and published under the YanMaga KC Special label.
RightStuf describes the Denpa-licensed manga as:
A high school loner is given the part-time job of a lifetime as a modern day ninja tasked to perform international assassinations.
After World War II, Allied Command in Japan developed a new agency to help manage terrorism and violence within the Pacific region. The agency was staffed with ninja and they were initially tasked to handle domestic affairs. Eventually that program grew to its current form, managing 20,000 ninja across a range of domestic and international affairs. One of those ninja happens to be Kudo. The seventeen-year-old high school loser is now poised to be the next line of defense against a potential surge in foreign assassins invading Tokyo.
Source: Anime PONY CANYON YouTube channel