Divorce if I become Emperor? I'm done pretending, I'm already invincible

Having achieved invincibility through his path of slaughter, Lu Qing'an grew weary of endless bloodshed. Yearning for a peaceful life, he abandoned the demon realm, concealed his Demon Emperor identity, and became a Dao companion to the woman he loved. A thousand years passed, and they lived a blissful life with two daughters and a son. Even with a "Divorce System" promising a millionfold cultivation boost upon divorcing his wife, he paid it no mind. In his words, what use is a millionfold increase when you're already invincible? Until one day, he learned from his youngest daughter that his wi…