Toki o Kakeru Makoto
Doctor Strange sends Makoto back in time to 6th century Camelot to retrieve the time-displaced Avengers
Aired 23/12/2017EP 23 - Toki o Kakeru Makoto

2017
Marvel Future Avengers
The anime follows Makoto, a young boy who gains superpowers due to an evil gene manipulation experiment. Makoto and other youths join the Avengers as apprentices named "Future Avengers." The anime shows Makoto and others as they train, fight villains and grow, under Avengers members Iron Man, Captain America, Hulk, Thor, and Wasp.
(Source: Anime News Network)