My Junior Sister Is a Sage and My Master

Zhang Hao transmigrated here and joined the sect of a Sage, only to suffer a massacre that wiped out the entire sect. He even became the Chosen One of Fate! The Netherworld System, the Superhuman System, the Summoner System... every one of these Systems' Hosts wants to kill him! Even his adorable junior sister, whom he risked his life to save, has been possessed by his Sage master, who wants to kill him! What should he do? Asking online, and it's urgent!