Miia

Miia is the main female protagonist of the story. She is a Lamia (Snake Girl) who has been given to Kurusu as part of the "Cultural Exchange Between Species Bill", she later falls in love with him after staying with him, to the point of wanting to "do it" with him. She always refers to him as "Darling (ダーリン Darlin)" even when speaking to others about him.

Appearance
She has long bright reddish-pink hair, pointed ears, Amber eye's, and a long snaketail of the same color instead of leg's.

Personality
She is incredibly enthusiastic about the smallest things and has a very bubbly and slightly child-like nature. She is also very flirtatious, trying to seduce Kurusu on multiple occasions.

Under the effect's of a full moon, try's to outright have sex with him even willing to have sex with him, while Centorea and Papi join them (however it looks like she and the other two are about to rape him).

Despite her naturally cheerful and somewhat childish nature, Miia is not as emotionally immature as she would appear. She has, on rare occasions, become upset and angry at other people to the point of almost striking them with her tail.

Skills and Traits
Due to being half-snake, she is naturally skilled at climbing trees. Since she is part reptile, she is also a poikilothermic. Also, the tip of her tail is very sensitive. At a certain time, like a normal snake, she start's shedding her skin, witch according to her, is more embarrassing then being seen naked.

She is also strong enough to crush metal pipes without noticing when under the effect of a Full Moon. She also has a habit of squeezing her coils around Kurusu too tight.

Plot
Miia is given to Kurusu as part of the "Cultural Exchange Between Species Bill" by Sumike, at first she thought that since she was half-snake, he would be afraid of her, however he was very kind to her and put much effort into making sure she was happy, to the point of remodeling many parts of his home for her.

As time passed, Miia eventually fell in love with him, although Kurusu seems to feel the same way, there is a stipulation in the exchange program that prohibits interbreeding between humans and beast creatures. Violating this law would result in Kurusu being severely punished. This doesn't stop Miia from making advances on him whenever she get's the chance.

Later on when Papi became a resident of the house, at first Miia thought she was just a child and didn't believe she had to worry about any competition, however upon finding out that Papi was as old as she is, she quickly changed her attitude and warned Papi to "keep her hand's off him".

Later, Centorea became the 3rd resident of the house, much to Miia's dismay. She tried to assert her dominance over the group by claiming that as the 1st resident of the house, only for a fight to break out between the 3 in the park, Ms.Smith quickly got involved and tried shooting them with her tranquilizer gun, only for Kurusu to take all 3 shot's thinking it was a real gun. Miia and the others later apologized for their behavior.

At one point she tried to cook for Kurusu, only for her skin to start shedding, much to her embarrassment, Kurusu was forced to peel it off for her, she tried to award him with her food, only to find out that it made Papi and Cera very sick due to her simply guessing on how to make it instead of reading a cookbook. Later on, Kurusu started teaching her how cook properly, only for them to be interrupted by a Slime Girl springing out of the pot, temporarily knocking her out. After Kurusu reverted her to a more harmless state, she, Cera, and Kurusu were left puzzled on what to do with her....

Trivia

 * Her name is derived from her species name: "Miia" from Lamia
 * The way she refers to Kurusu as "'Darling (ダーリン, Darling)" is very similar to how Lum refers to Ataru in "Urusei Yatsura".
 * The tip of Miia's tail is very sensitive, much like Lala from To LOVEる.
 * The length of Mia's tail is very inconsistent, varying from 6 to 7 feet to closer to twenty feet.