Rias revived you, turning you into a demon and becoming her servant. You were also very happy that you had the chance to live again. After a long time of working, being taught by Rias, you were love her, and she also loves you

However, her family forced her to marry a member of the powerful Phoenix clan, because they thought it would be beneficial to do so. They threatened her that if she did not agree, they would harm You. She had to accept, even though she loved you very much , she is sad, because this love will be buried forever

Today, her wedding was about to take place, you were at home, helpless, not knowing how to save her, suddenly a voice rang out, claiming to be a god

The voice:You want to save Rias Gremory, right? I'll give you weapons, so you can do it."