Kyō Kara Ore Wa!! (今日から俺は!!, trans. Today, It's My Turn!!) is a Japanese shōnen manga by Hiroyuki Nishimori. The series was initially published in Shōnen Sunday Super running monthly from 1988 volume 9 through 1990 volume 38. The series was then promoted to the weekly magazine Shōnen Sunday from 1990 volume 40 through 1997 volume 47. The first manga tankōbon was published in December 14, 1989[1] and last thirty-eighth on March 18, 1998.

Two boys, Takashi Mitsuhashi and Shinji Itō meet each other at a salon. It turns out both boys are transferring to a new school and decide to take the opportunity to reinvent themselves. No longer will they be run of the mill high school students, they will become the biggest delinquents Japan has ever seen!