Thousands Of Dreamless Years summary:

"Warning: Yaoi content: This manga contains materials that might not be suitable to children under 17. By proceeding, you are confirming that you are 17 or older."Lan Xieyi, an ordinary boy, wakes up one day to find he's travelled through dimensions and has become a demon's male pet! And he's even being used by the owner of this body to act as Bai Yueguang's substitute - this demon slave's body is actually quite sweet! He must deal with the owner of the body, the Dragon Prince, Di Jiang; the cold heavenly immortal, Liu Yun; the wolf in sheep's clothing, You Chang; and the beautiful phoenix Bi Wu. Their love makes Xieyi hesitate - if this is a dream, then when will he wake up? Where does this nostalgia in his heart come from? After transmigrating to a new world, the male pet strikes back and creates his own harem of beautiful men!