Ren Uesugi  

, 上杉 錬

Hired by the Kuonji family after running away from home with his sister. Known for his stubbornness and unwillingness to admit defeat, he also has an older sister complex towards Mihato. His father used to beat him up during his childhood. Currently he is Shinras personal butler, because she loves to tease him for his honest and straightforward personality. It seems that he has feelings for Shinra Kuonji. The anime ends where he has yet to designate himself as a personal butler to one of the three sisters, ending up with them (along with Ageha) fighting for the rights of being his master. Ren is called Ren-chan by his sister who he calls Hato-nee.