It's an anthology manga (aka, mangaka adapting same story or characters to their sauce) about the theme that the villainess gets captured by the heroine.It's nice to see this complete but unfortunately the theme of this has very many similar plot points so I feel like they all could've gone a little more wild with it. The villainess confrontation is a bit too overdone at this point to the point where something like MagiRevo only gets a pass for tweaking on it slightly.
I think the princess mentioned they'd found a bastard child of the king to inherit the throne after her?What are they going to do about succession though?