Bab 552: The secret of the ancient ruins

Rudra was studying the mysterious orb which was supposed to be the key to some ancient ruins for the last few hours as he felt as if all the answers he needed about the orb were already in his brain , however they were covered behind a thin layer of haze that Rudra just could not see through. 

The orb had the words " On the night of the blue moon , purple fog will cover the land as the power of the ancient shall not be restrained ". Inscribed on it , which was very close to a legend that Rudra had heard about in his past life. 

Rudra was sure that the part where there was blue moon that released purple fog was very close to the legend of Purplehaze city , however Rudra had spent two of his entire lives in Purplehaze city hence he found the possibility that the city was built on ancient ruins to be bleak.