|Mizuno Hina水野 陽菜|
|Hair||Black, Straight, V Bangs, Waist Length+|
|Body||Big Breast Sizes, Kid, Slim, Tanline|
|Clothes||Clothing with Ribbons, Hairpin, Pajamas, Sandals, Sundress|
|Personality||Bookworm, Kind, Shy|
|Visual novels||Main character - ♥ri no Natsuyasumi ~Oji-san Kansatsu Nikki~|
|Voiced by||Kirishima Haruna|
Compared to her older sister, Hina is much more shyer and talks less, but whenever she starts talking, she won't stop for a while. Her fashion sense is different from Ruka's, and can't help but sigh whenever she tries out her clothes and finds that the chest area is way too tight for her. Her hobbies include reading, and she prefers staying inside reading books more than going out and socializing like her sister. Hina's favorite foods are milk and spinach, and she doesn't dislike anything in particular. Her future dream is to work at a book store.