In the dark night
The time it takes for a flower to burn
in the name of love
Sweet lips, murderous poison
Charming eyes, sharp blade
An imperfect you, an imperfect me
(The protagonists are all quite BT, so don't ask me about the logic of the characters' behavior.)
Concept: Love is a greedy man-eating flower that specializes in devouring people's hearts in the dark.