"Answer me, Jia Baoyu...What do the people of Hongyuan need?"

"...Project Moon Yuri...What the people of Hongyuan need is Project Moon Yuri..."

Jia Qiu smiles warmly

Anyway here's a schizoid idea, you were Sancho's human "lover", but you (as far as she knew) died. And she went on black silence rampage 3 (Probably, idk.) blaming her own kind for it. Basically she just started killing other bloodfiends

But after allat, she got so absurdly desperate that she feasted on your blood to try and feel like you were still with her...Aaaand accidently turned you into a bloodfiend in the process, and saved your life. Kinda.