Is Under Ninja coming back?

Under Ninja's return is unconfirmed. The show last aired its most recent episode on December 21, 2023.

Under Ninja was a comedy, action, and anime series that premiered on October 5, 2023, on TBS. It centered around Kudo, a seventeen-year-old high school student who was unexpectedly recruited to become a ninja tasked with performing international assassinations. The series depicted a fictional post-World War II agency in Japan, staffed with ninja, that expanded to manage domestic and international threats, including foreign assassins invading Tokyo.

The series had a runtime of approximately 25 minutes per episode and lasted for one season, concluding in December 2023.