Kōji Kumeta is a Japanese manga artist known for his unique storytelling and distinctive art style. He gained popularity for his series such as Sayonara, Zetsubou-Sensei, which features dark humor and satirical commentary on society. His works often explore themes of despair, existentialism, and the absurdities of life, appealing to a wide audience. In addition to Sayonara, Zetsubou-Sensei, Kumeta has created other notable series like Kono Oto Tomare! and Kōri no Hana. His ability to blend comedy with serious topics has earned him a dedicated fanbase and critical acclaim in the manga community.