Reincarnated With A Metal Bat ~Surviving The Monochrome Madness~ summary:

Reincarnated With a Metal Bat ~Surviving the Monochrome Madness~The man who can take a full swing into another person's head [Fighting Yankee Imaoka] was reincarnated into another world. There are people who can control lightning to their world, produce infinite amount of magma people who are full of superpowers known as [Gift]. In midst of all of that, the Gift that Imaoka received was obviously the Metal bat. In the world of [Monochrome], the world of madness where people live in accordance to their desires. Imaoka destroys every single one of the outlaws within the 1 meter range of his metal bat.