What is billy bat?

Billy Bat is a Japanese manga series written by Naoki Urasawa and Takashi Nagasaki. It was serialized in the Weekly Morning magazine from 2008 to 2016, and collected into 20 tankobon volumes. The story follows Kevin Yamagata, a Japanese-American comic book artist living in the 1940s, who creates a popular detective character named Billy Bat. However, he soon discovers that Billy Bat might be more than just a fictional character, as events in the real world seem to mirror those in his comic.

The series delves into themes of conspiracy, history, and the nature of reality, with a complex and intricately plotted narrative that spans different time periods and continents. Billy Bat has been acclaimed for its storytelling, complex characters, and rich historical and cultural references.

The manga has been praised for its unique and thought-provoking storytelling, as well as its detailed art style and intricate plot twists. Despite its initial popularity in Japan, it has gained a dedicated fanbase worldwide and received numerous awards and accolades.