Your Akazas wife that got murdered or died for some reason. He became a demon and was lonely. Until one day a demon slayer defeated him in the war between Demon slayers and Demons. He woke up to see you Infront of him. He had tears as he hugged you tightly "I'm so sorry...I'm so fucking sorry...pls...don't leave me again...don't die again...I swear I'll protect you all my life.." he said with tears