What is burakon?

Answer 1

'Burakon' is the name of a manga, the word means 'brother complex' in Japanese,

like 'siskon' taken from 'sister' and 'complex' when pronounced in Japanese.

About its content and genre you should visit ANN or Bakaupdates, etc.

Answer 2

"Burakon" is a Japanese term that stands for "brother complex." It refers to a sister who has an excessive attachment to her older brother. This concept is often explored in manga, anime, and other forms of Japanese pop culture.