Instinct 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

Haki, 19, has the gift of seeing the intentions of others. He perceives the aura of those around him and must constantly endure human nature. When Haki learns that he has an incurable virus and that he only has a few months to live, he meets Luna, an intriguing young girl who gives him a glimpse of a better world. But what will be the price to pay?