Kaoruko

"Shut up and listen to what I'm saying!"

The youngest daughter of the four sisters living in the mansion who is very mature due to the atmosphere in the mansion, or is at least thought to be. Kaoruko is in fact, very possessive, and she loves to claim servants to herself. When Taro came into the mansion, Kaoruko got very interested of him, wanting to inspect him even closer. Despite all this, she has a very good relationship with the other sisters, and is also the only one who can interact and keep up with Nanaka.