In December 2002, when no one celebrates his birthday, he suddenly realizes that his life is too unsatisfactory, and begins to feel anxious.

After a series of twists and turns, Kurosawa wins the trust of his younger coworkers, but new problems keep following him one after another, and unexpectedly, he has to go through all sorts of carnage to earn his title of "the strongest".

was serialized in Shogakukan's Seinen manga magazine Big Comic Original from December 20, 2002,[2] to September 9, 2006.

[6] A sequel, titled Shin Kurosawa:Saikyō Densetsu (新黒沢 最強伝説, lit.

"New Legend of the Strongest Man, Kurosawa"), launched in Big Comic Original on May 20, 2013, to celebrate the 40th anniversary of the magazine.