Endo is best known for creating Tista, Blade of the Moon Princess, and Spy × Family manga series among other works.
The latter work has been serialized on the Shōnen Jump+ platform since 2019 and had over 35 million copies in circulation as of March 2024, making it one of the best-selling manga series of all time.
His favorite actors and actresses are Bruce Lee, Hiroshi Abe, Meg Ryan and Audrey Tautou.
Endo worked as an assistant for the manga series Blue Exorcist, Fire Punch, and Attack on titan.
[3] Lin claimed that the reception for Spy × Family from their editorial department was so good that its serialization was "practically decided" before an official meeting for it took place.
[3] The one-shot, I Spy, could be seen as a transition piece between Endo's dark and bright narratives, as it incorporates the mature themes of his early work while still being a "cheerful title" like Lin had suggested.