Critical reception Sonny Boy has received favorable reviews, having been called one of the best anime of its season and of its year, and it has been noted as particularly original within the genre.
Comic Book Resourcess Maria Remizova considered the series to be the best modern anime overlooked by audiences, writing that it "encapsulates the allure of anime's more bizarre and experimental side, utilizing unconventional storytelling and visual techniques to craft a perfect mystery narrative", and further explaining that, while confusing at first, the story became very rewarding as it developed. Evan D. Mullicane from
Screen Rant proposed that
Sonny Boy was a
deconstruction of the main theme of isekai, writing that "Far from the fun getaway of many isekai anime, Sonny Boy's This World keeps its residents as captives and prevents them from growing", thus making a critique of the
escapism that is ever-present in the genre.
Colliders David Lynn commented that although some initial parallels to
Lord of the Flies could be drawn, the series "expands far beyond simple comparisons to its inspirations" addressing many different social and philosophical topics, and "ultimately challenging its characters to consider the very purpose of life". Lynn also noted that while the non-traditional narrative might be a major turn off for some, the series still offered compelling stories without falling into "despondent nihilism". Lynn commended how the animation work helped to accentuate the otherworldly settings of the series, calling it "a poster child for productions that can only be done justice in animation". The series was nominated for
Anime of the Year and
Best Director (
Shingo Natsume) at the
6th Crunchyroll Anime Awards. The series was also nominated for the Anime Trending Awards in four categories "Best in Original Screenplay", "Best in Sceneries and Visuals", "Mystery or Psychological Anime of the Year" and "SciFi or Mecha Anime of the Year". == Explanatory notes ==