WHO

My theory is I think its Solhwa but reincarnated. Why because Light and Solhwa just wanted to be loved by someone in their world, but they couldn’t experienced that sadly. After Light’s death, I feel like Light was meant to be the other lifetime, just like what happened to Ellin. But then again Solhwa soul is in peace buttt i feel like the reincarnation of her is a fresh new start again. I feel like It was meant of Light and her to have a chance to find somebody and experience actual love but in a different lifetime. So both roles played out well for those two and Ellin but in different lifetimes.