Chapitre 611: 12.13 Unknown Star - Modern ABO World: Back to the past.

Ye Yuyan didn't think twice when he heard the question System Yue had asked of him. He agreed right away before System Yue explained things to him. Seeing that his partner System Yang had just activated the Time Scroll he agreed to speak of the conditions once they returned back to the past. He only helped and protected the original Ye Yuyan's soul before their regression happens. 

The whole world was covered with light for just a split second but no one knew that at that moment the world had spun counterclockwise a few times as the time reversed. It returned to the timeline from 3 years ago.

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At the most luxurious hotel in the city...