Ayana Hirose

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No, I didn't mean you! My little brother is wandering around in his underwear, ha ha...
—Ayana Hirose on the phone, Chapter 321: Let's Go to the Manga Artist's House, Part 4

Ayana Hirose (広瀬 綾那, Hirose Ayana) is a tertiary character featured in the fourth part of the JoJo's Bizarre Adventure series, Diamond is Unbreakable.

Ayana is the older sister of Koichi Hirose and the daughter of Mr. and Mrs. Hirose, and she is in her final year at an all-girls high school.[2] She and her mother are attacked by Tamami Kobayashi, who amplifies their guilt with his Stand, The Lock.


Model Sheet Ayana Hirose.png

Ayana has dark, shoulder-length hair with two outward curled bangs and thin eyebrows. Tamami Kobayashi thinks that she is "cute in a hot way".[2]

She is first seen wearing a sleeveless dress along with a belt, pantyhose in the manga, and slippers. While on the phone with a friend, she has on a tank top and pants and no shoes. Her hair is tied into a ponytail. When she goes shopping with her mother, she is wearing a long-sleeve, buttoned blouse with a pocket on each breast, a short skirt, and high heels; her hair is not tied up.

Color Schemes

The series is known for alternating colors between media, the information presented below may or may not be canon.
Skin(Fair, pink lipstick)
(Light purple dress, brown belt, brown pantyhose, pink slippers)
Skin(Fair, pink lipstick)
(Pink and blue dress, white belt, pink slippers)


Ayana is a kind, polite young lady. She cares for her brother and calls him "Ko-chan" like their mother.[4] She is also seen to enjoy occasionally teasing Koichi.[5] She is kind to strangers, smiling at Koichi's friends[6] and offering Tamami tea when he visits.[2]

She is shown to worry about others when she accidentally harms them and begs for forgiveness when she does.[2]


Diamond is Unbreakable

Koichi Hirose (Echoes)

The Lock affecting Ayana and her mom

Ayana's mother is greeted by Tamami, who makes up a story about how he kindly found the 7,000 yen that Koichi dropped and wanted to bring it back to him. Before Koichi comes home, Ayana serves Tamami a cup of tea. However, Tamami gives Ayana a little nudge which makes her spill the tea on his hand. He overreacts like it burns and Ayana repeatedly apologizes. Her guilt causes The Lock to appear on her chest.

After Koichi returns home and The Lock appears on his mom's chest as well, Ayana enters the room and asks Koichi if something's wrong. He then sees that she has The Lock as well, and Tamami mocks her, while also fantasizing about how cute she is and what he would like to do with her.[2]

Ayana and her mom are pushed out of the room while Koichi confronts Tamami.[7] After a loud scream from Tamami, she runs back into the room with her mom to find Tamami bleeding with the knife in Koichi's hand. Unaware that Tamami had actually cut himself in order to frame Koichi, The Lock on Ayana and Mrs. Hirose's chests multiply in size due to their guilt. Ayana cannot bear the heaviness of The Lock and falls to the floor. After Koichi gets his mom to believe in him, Tamami surrenders and removes The Lock from Ayana as well.[4]

Let's Go to the Manga Artist's House

Ayana is on the phone with her friend when she notices Koichi run out of the washroom in a panic with only his boxers on. She asks him if he needs anything or wants to use the phone, but Koichi says he forgot what he needed. Ayana calls him weird and giggles to her friend that her little brother was just walking around in his underwear.[5]

Yukako Yamagishi Dreams of Cinderella

Ayana and her mother shopping

Ayana and her mother are out shopping when they stumble upon Koichi and Rohan. When her mom requests to come with them to Kameyu Department Store, Ayana goes along with them. Ayana's presence along with her mother's makes Yukako believe that luck is not on her side, as she wanted to be alone with Koichi.[6]

Goodbye, Morioh - The Golden Heart

The information below derives from the Diamond is Unbreakable TV anime which was not written by Araki. As such, it may not be considered canon.

In the anime adaptation, Ayana and her mother are outside Kameyu when Ayana says that she just saw Koichi holding hands with a really pretty girl. Mrs. Hirose is shocked because Koichi never told her anything.[8]

Concludes non-canon section.

Chapters / Episodes

Book Icon.png Manga Appearances
Chapters in order of appearance
TV Icon.png Anime Appearances
Episodes in order of appearance
Book Icon.png Novel Appearances
Chapters in order of appearance


Quote.png Quotes
  • Koichi, is something wrong?
    —Ayana Hirose, Chapter 286: Koichi Hirose (Echoes), Part 3
  • Ko-chan? What are you doing? Do you need something? Do you... need the phone?
    —Ayana Hirose, Chapter 321: Let's Go to the Manga Artist's House, Part 4
  • You weirdo. No, I didn't mean you! My little brother is wandering around in his underwear, ha ha...
    —Ayana Hirose, Chapter 321: Let's Go to the Manga Artist's House, Part 4



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