Irregular Hunter Rockman X

Irregular Hunter Rockman X (イレギュラーハンターロックマンX) is a manga by Shigeto Ikehara based on the first Mega Man X game. It was published by Comic Bom Bom between 1994 and 1995 in two volumes.

and it is based on the mega man X series where megaman fights sigma on a one to one furious battle