Panty Warrior is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Hero otaku Parsley, after being rejected by a woman 9 times, he wants to become a hero himself! Although he manage to get the upper part of the armor... He has no pants... So what? As long as the top looks cool. Victims deceived by Parsley's armor are on the rise! To defeat the Demon King and become a hero, Parsley and his companions' adventure begins now!