Mei Higurashi

"That's a promise! I love you, Towa! I love all of you!"

- Mei Higurashi to Towa Higurashi, Setsuna and Moroha

is Sōta and Moe Higurashi's daughter. She is also the adoptive sister and half-cousin-in-law of Towa Higurashi, of which she is the first cousin of quarter dog-demon Moroha.

History
Mei was born to Sōta Higurashi and Moe Higurashi. She was raised by the two along with her adoptive sister Towa. Mei and Towa grew very close together and cherished each other.

Personality
As described by Towa, Mei is smart, honest, and very talented, but is also shy and naïve at times. She is overly optimistic and constantly smiles, just like her adopted elder sister.

Physical description
Mei is a young girl with long brown hair, brown eyes and a warm skin tone. She wears a light pink shirt with a paradise pink line on the cuffs, a dark purple vest over it, a pink skirt, light pink socks, and a pair of paradise pink Mary Jane shoes with a bow. During winter, she wears a white long sleeve turtleneck with rose accents underneath a light pink coat with a dark pink collar and buttons, a rose skirt, white leggings, rose socks and brown boots.

Relationships
Sōta is her father. Mei loves her father dearly.
 * Sōta Higurashi

Moe is her mother. Mei loves her mother dearly.
 * Moe Higurashi

Towa is her adoptive older sister and half-cousin-in-law. The two of them love each other very much. Towa is extremely protective of her, immediately going to her location after realizing she is crying. Towa also refrains from fighting in Mei’s presence, knowing that it will make her sad.
 * Towa Higurashi

Mei is not very happy about Towa's choices, such as not being more "feminine", keeping her to never backing down from a fight, although it's mostly because Mei is worried about Towa getting into trouble.

Despite this, Towa would question whether the reason she cares for Mei is because she sees her as a replacement for Setsuna. Nevertheless, when she thought the latter is going to hurt the former, Towa does not hesitate to point her sword towards Setsuna to protect Mei. She also hugs and promises Mei to return once she restores Setsuna’s memories and ability to sleep, showing that Towa truly loves her adoptive sister.

Moroha is Mei's paternal cousin. Moroha protected her from the demon Mistress Three-Eyes and was disgusted at the minor demon Hitōkon for trying to possess the girl into attacking her family. Mei looks up to Moroha and considers her more as a sister.
 * Moroha

Setsuna is Mei's half-cousin-in-law. She appears to be in good terms with her, willing to engage in casual conversation with her cousin. When Mei was initially possessed by the Hitōkon, Setsuna originally planning to cut it from her eye. But remembering Mei's smile, along with thanking Setsuna for saving her life from Mistress Three-Eyes, causes Setsuna to simply use the anti-demon potion on her instead.
 * Setsuna

Osamu Kirin

Upon leaving her paternal relative's home to meet up with her best friend Itsumi, she says hello to the bespectacled man as she leaves, which he returns.

Trivia

 * She and her mother have the same names of Shun Mitaka and Asuna Kujō's children from Maison Ikkoku.