That's the Regret That Our Previous Life Didn't End

There is not much love, but there is unspeakable sadomasochism. He loves her, and she loves him deeply, but fate is always playing tricks on them, as if the fate of the previous life must be repaid in this life. She chases after him, but he cannot hold back. He wants to hold her hand, but there is an invisible force that separates them.