The Heartless Supreme Lord cultivated the Heartless Art, but after meddling in a couple's romance, he was betrayed by his sect's disciples, lured into a deadly formation, and ambushed by several enemy factions working together. At the last moment, however, a spatial disturbance transported him to another world. When he woke and opened his eyes, he saw a little golden figure using a stick to draw circles. And so the peerless Supreme Lord began to roam the world, encountering a master of true love along the way whose power stirred even his heartless soul.
No breaking up canon couples + possibly a single heroine + not stealing the spotlight
It's pretty good, very nice.