Sword Saint's Thousand Autumns

When a scrappy mortal heroine and an icy genius swordsman are bound by an ancient Chaos Spirit Pearl, their souls become unwilling roommates. Yun Qianyue never asked to share headspace with the legendary Mo Yuan, but their awkward psychic connection is the least of their problems. Together, they'll unravel a conspiracy that threatens to shatter the balance of the Three Realms—if they don't drive each other mad first.