Friendly reminder that if you are renting, you actually don't own the place and that while defending someone being harassed is a good thing, kidnapping the guy afterward might be surprisingly frowned upon by law enforcement (also, asking to "see the manager" when the police knocks on your door doesn't work IRL). Is this "Sovereign Citizen Isekai"?
P.S.
Checking the group website shows that the chapter was cut short, that's why it's so abrupt. Also, there are more chapters there (up to 9, it seems).
P.P.S.
Sadly for my joke, it seems like she owned the place, and the misunderstanding was because of the awkward translation.