Chateau and Ryang-ha don't fall in love, they become necessary to each other, and that's a completely different thing. The show builds romance through violence, trust earned in blood, two people who should kill each other choosing not to instead. It's Kaguya-sama stripped of the games, where the psychological warfare becomes the actual thing you're watching, and by the time you realize you're invested in whether they survive together, the show has already made you complicit in their survival.

Chateau Dankworth is a novice bounty hunter who never expected to meet anyone able to beat her in a fight, until she clashes with Ryang-ha, a mysterious and powerful assassin. What should have made them enemies turns into something stranger: for reasons of his own, Ryang-ha takes a liking to her and starts following her around, even helping with her missions. Her company is then ordered to eliminate him, and Chateau reluctantly agrees to a deal: she will go out with him, and in return he will tell her where current targets are. Their uneasy partnership pulls her into his fight against the organizations hunting him, a battle that is also tied to her own hidden past. The series mixes action, psychological tension and a twisted romance between two killers.