Strongest 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

Once, there was a man who obtain the title of the “STRONGEST” but one day at the top of the highest mountain he shout so loud and challenge everyone “THE ONE WHO CAN BEAT ME WILL BE THE NEXT STRONGEST” and so those who desire his title accpeted his challenge and fight him, the era of the STRONGEST has begun