Perhaps I should read a bit as well.

The Mistress gives high praise to this manga...

On top of the objections around them, this bad woman tries to steal the hero, even going so far as to send an assassin!

In the end, the older sister gets stabbed to death!

But the last scene, with her dying message in a pool of blood, proclaiming her love, is fantastic!

Oooh! That's a fun one, Miss Sakuya!!

The hero and heroine fall in love, but they're actually blood-related siblings!