Sakaguchi Haruo

"Milady! Please don't do anything rash!"

Pervert

The young leading subordinate of Onigashima's henchmen and Hikaru's caretaker. He's a graduate of Shishiku Academy. Under "Hikaru's order", he'll throw everything away to prioritize Hikaru but Hikaru is disgusted with him. As the only person who knows about Hikaru and the heroine's switch, he follows up and covers for them regarding the family's arrangements, formalities, and the like.