Old 80s or earliy 90s (Thai?) film.

Was about a goddess flying woman in pink robes that fell in love with a mortal man, who turned into the devil and at the end she threw a sword at him, killing him, but the devil left him.

Main charachter was a woman in pink, pronounced "Tien Yao", she flew around checking on mortals. Sometimes she would talk to her mom?, who lived on/inside the moon, who always petted a rabbit.

She has a partner, a fat redhead guy in white robes.

She falls in love with a mortal guy, whose studying books, who has his hair tied to the ceiling so if he falls asleep, his hair gets pulled. He also had a servant named "Apoo".

She fights a flying red orb, the devil, with her partner, they blow it up and blood gets everywhere, she uses a sucker thing to suck up the blood.

Her mortal love insterst follows her, and get some of the devil blood on him, and turns into the devil.

At the end, they fight, and she attempts to kill her posses lover by throwing a sword a him. Hits the guy, but the devil leaves the body, leaving her love interest dead.

There's a 2nd part where she resurrects him. And I think a 3rd part where she eventually comes around and lets him find a mortal woman to marry and settle down, she flys and checks in on him and his family, and flies off.