This is Sweet because they both know what's happening, ML's a stalker who goes into MC's house, cleans, cooks, and fucks him for free.
And MC knows all that but still likes it, if both consent to such a weird situation, who are we to judge? Both are thriving and happy so I feel wholesome for their weird as fuck situation.
It's not the same as those other stalker story where one party, usually the one getting stalk, doesn't consent to it.
I feel like they're just kinky as fuck.