Age: 16
Birthday: June 22nd (Gemini)

A first year student at Ohananomitsu High School in Class 1-4 as well as Aijou Rentarou's first girlfriend (alongside Inda Karane). Although appearing prim and proper on the outside, she often thinks of "lewd" things that she wants to do with her boyfriend.

Hakari loves Rentarou. She is classified as a deredere with her cheerful, kind, and loving personality, being also quite lustful. Having a strong sex drive when near Rentarou.

Being, along with Inda Karane, Rentarou's first two girlfriends, they tend to spend a lot of time together. Due to the immense longing and love they feel for Rentarou, they have come to kiss each other unconsciously, while thinking about him. Hakari often becomes jealous when the other girls kiss him, demanding to be kissed in compensation.

Due to her perverted side, she often fantasizes about Rentarou, going so far as to kiss the first person or object next to him, while thinking about him, with Karane being the main victim of this behavior.

Name/Birthday Pun Explanation:

Hanazono (花園) means "flower, blossom" (花) (hana) and "garden, park, plantation" (園) (sono/zono).

This is a reference to the phrase "頭がお花畑 (Atama ga Ohanabatake)" literally meaning "flower garden in the head", used to refer to someone who has constant delusions and fantasies.

Hakari's birthday is on June 22nd. This is a reference to her distinctive laughter style, むふふ (mufufu), or "mwehehe" in the official translations, being a Goroawase (wordplay) for 622.

(Source: 100Kanojo Wiki)