Protoss Dark Emperor 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.nl fastest updating comic site. The Summary is

Su Xiaobai was on the brink of death, he was brought into a new world. The soul of the strongest evolver “King of Stars” Long Ming now inhabits his body. Therefore, he has acquired an extremely powerful ability : “The Endlessness of Dim”. The only drawback is that if Xiaobai ever gets a boner, he will experience severe pain. However, when he will have found the murderer of Long Ming and ascended the throne of Protoss Palace, this weakness will disappear…