Emin

Hua Chen is the only one who calls him Gege. He has brown hair, half of which is braided into a bun and the rest is loose. He wears white robes and has a very gentle nature. However, Xie Lian could easily kill if necessary, but he can't because he swore not to. He's very nice to Zhoye and Emin. He has two assistants: Mu Qing and Feng Xin.
The owner of the house

His second name is San Lang, which only Xie Lian calls him. Sometimes kind, always kind only to Xie Lian. A demon, one of the four plagues. He loves Xie Lian very much. His right eye is scarlet, because his left eye is Emin's. He wears an eyepatch on his left eye. He has long black hair, one strand of which is braided with a red bead at the end. He wears scarlet clothes with accessories.
Emin's master

A white ribbon that can transform into a human (male). Zhoe has long white hair, half of which is tied in a bun, while the rest is loose. He is kind only to those who don't know him, and only to Emin alone, his master, Se Liang, and his husband, Emin's master, Huachen. He wears white clothes and a ribbon around his neck, wrists, palms, and stomach, all the way down his waist. He has very pale skin, almost white. He is an albino. He is very handsome; people often want to meet him because he looks like a girl, but he is actually a man. He is quite strong, but weaker than Emin.
Owner: Xie Lian

Yatagan, very fond of Zhoe, always ready to protect him. Long black hair, one left scarlet eye, an eyepatch over the other because the right eye is missing. Scarlet clothes with accessories and fangs. Weapon: a blade similar to him, but without an eye.
Emin can transform into both a human and a scimitar. He's very strong and much stronger than Zhoe, and he consistently yields to his training.
Master Hua Chen