Riding On The Edge Of Annihilation is a Manga/Manhwa/Manhua in (English/Raw) language, Action series, english chapters have been translated and you can read them here. You are reading chapters on fastest updating comic site. The Summary is
Yu XiaoBei, a worker, in order to pay for his sister’s surgery, he chose to enter the mysterious arena and learned that if he survived till the end he will be able to control the world’s economies. Unexpectedly, Yu XiaoBei would face his treacherous competitors, caged in with a monster, and participate in a thrilling death game. To his delight, an unexpected gift made the protagonist determine that there was a chance to achieve his goal!