Fantasy: Returning to the World, Killing His Fiancée at the Beginning

[System]+[Combat]+[Revenge]+[Decisive]+[Single Female Protagonist]+[Master-Disciple Love]+[Stay Holy Virgin] Long Aotian, the youngest emperor of the Ten Thousand Realms Continent, has been unable to break through to the final divine realm for many years. After the system on his body couldn't stand it anymore, he finally used all his power to send Long Aotian back to the Ten Thousand Realms Continent thousands of years ago, just so that he could make up for the regrets of the year and break through to the final realm of God. It's a pity that people are not as good as God. On the day when Long Aotian successfully returned to the Ten Thousand Realms Continent thousands of years ago, due to a moment of inadvertence, he killed his fiancée who had been in his heart for thousands of years... "Brother Aotian, do you think Xuan'er's white dress stained red with blood looks like a bright red wedding dress?" "Brother Aotian, Xuan'er really wants to be your wife and stay with you for life, but unfortunately... You and I are destined to have no connection after all..." "Although the ending between you and me is not perfect, Xuan'er has never regretted meeting Brother Aotian!"