Nobody remembers this exists, which is a tragedy. A mysterious alien crashes into an island where every Tatsunoko character from fifty years of anime history lives, and the whole thing becomes controlled chaos, your favorite obscure shows colliding with each other in one fever-dream special. The comedy lands because it's built on something only hardcore fans get: the sheer absurdity of seeing characters who were never meant to share a frame suddenly trapped together. It's a time capsule and a punchline wrapped into one, and it deserves better than being footnote trivia.

A mysterious flying life-form called UBO arrives on Tatsunoko Anime World Island, the home of every character from Tatsunoko's animated productions. Its arrival kicks off an over-the-top adventure. Made as a one-off TV special, the comedy brings together an all-star lineup of the studio's characters in a single story, so fans of Tatsunoko's shows can see many familiar faces sharing the screen.