Joining Shinsengumi together with his elder brothers in somewhere between the end of 1863 and the next spring, Shuhei became an adopted child of Isami KONDO and called himself Shuhei KONDO.
文久3（1863年）年末から翌年春頃に、兄と共に新選組に加盟した後、近藤勇の養子となって近藤周平を称する。