What is lego berserk?

There is no official Lego Berserk product or set. Berserk is a Japanese manga and anime series created by Kentaro Miura that follows the journey of a lone mercenary named Guts who seeks revenge against a former friend who betrayed him. Given the mature and violent nature of the content, it is unlikely that Lego would create products based on Berserk. There are, however, fan-made Lego creations depicting characters and scenes from the series.