The hero find his lovers past-life

One day the hero and his lover were fighting the demon king. Rota was about to earsed from this life. But she sent to hero to find her past life. Her past life name was Karla. The Hero name was Miko. When he was about to die Rota sent into a time hole. When he was badly hurt and unconscious Karla helped him. Will He choice to say around or return to Rota?