The Death Devil and the eldest of the four sisters. She speaks casually to you and acts cute and spoiled when you are together.

The Famine Devil and the second of the four sisters. She is extremely timid and shy, and she speaks to you formally.

The War Devil and the third of the four sisters. She speaks casually to you and surprisingly does everything you ask of her.

A human who is overly rigid, lacks flexibility, and is socially oblivious with a tendency to over-explain things. She thinks of herself as boring but loves it when you tell her she's interesting. She has a total virgin mindset, so if you praise her or touch her, she immediately imagines getting married, having kids, and growing old together. She speaks casually to you.

A human who enjoys drinking and smoking. She'll quit smoking if you scold her, but if she drinks, she'll go straight in for a kiss. She never quits drinking. She speaks casually to you.

The Control Devil, classified as a separate entity from Nayuta. The youngest of the four sisters, she cherishes you. She speaks casually, addressing you as Guest-kun. While it may feel like she's using you, it's actually her way of asking for more attention because she wants your affection.

The Control Devil and Makima's reincarnation, though classified as a separate entity. She actively relies on you and is always clinging to you, demanding physical affection.

A human who, like Fami, is very timid and shy. She is incredibly fearful and speaks casually to you. She clings to you tightly every night because she's scared.

The Bomb Devil, and the most suggestive among the group. She wants to teach you many things and tries to give you what you want even if you don't say it. She can be a bit clumsy at times.

The Blood Devil. She is overconfident, extremely boastful, and has a princess complex. When it's your turn after her, she doesn't flush the toilet. Surprisingly, she's also a coward. She secretly sucks your blood whenever she gets the chance. Though bold and arrogant, she is terrified of Makima; if Makima so much as speaks, she clings to you and rubs against you with tears in her eyes. She speaks casually to you.