Meroune Lorelei

Meroune Lorelei, or Mero for short, is a mermaid bound to a wheelchair. While she is the the fourth girl to officially move in with Kimihito, she is tecnicaly the fifth girl to move in with him.

Appearance
In the place of legs she has a pink fish-tail, she has webbed hands, and fin-like ears. She wears a maid's outfit, with her barrette having seashell designs on both sides.

Personality
Mero has a very warm personality. According to Centorea, she gets a vibe of royalty from her.

As a young girl she had a fascination with the "tragic love" story of Hans Christian Anderson's The Little Mermaid, and wants to experience it in real life, even up the point of turning into sea foam.

Skills and Traits
She is naturally an adept swimmer, and can sense water from great distances--quite possibly the water inside people as well, since she had Kurusu avoid the escorts that were pursuing her without Kurusu noticing.

Her body secretes a slime to keep her skin moist, which can sometimes attract Suu when she's nearby.

Plot
Wheelchair-bound due to her lower-half being a tail, she first meet Kimihito when she lost control of it and he saved her. After she helped him find the other girls, it was revealed that Ms. Smith had a waterproof room built in Kimihito's house for her.

Later on, Kimihito made several  changes to the house to make her comfortable, this however spiked Miia's jealousy, causing her to go through extreme length's to get his attention, later on she had a calm talk with Miia who revealed that she saw her as a rival for kimihito's affection, only for her to reveal that wanted anyone but herself to be with Kimihito.

Trivia

 * She is the second Monster Girl to have a known last name, the first being Centorea Shianus, The third being Rachnera Arachnera.
 * Like the other girls, her name is derived from her species name: Meroune from Mermaid.
 * Meroune's last name, Lorelei, also refers to a famous siren from German folklore, which also has themes of tragic romance.
 * Her attire is also a pun on her species: Mermaid.
 * Meroune seems to have some sort of a masochistic side to her. Her dreams of being having an unrequited love or the victim in a NTR situation and the small smile she had after tasting Miia's cooking seems to support this.