Kyoka Jiro (耳郎 響香, Jirō Kyōka) is a Class 1-A student in My Hero Academia whose Quirk, Earphone Jack, lets her hear through surfaces and turn her heartbeat into sound attacks. Her hero name is Hearing Hero: Earphone Jack. She is 15 when the series starts, sings in the class band at the U.A. School Festival, and loses her left Earphone Jack to All For One in manga chapter 355.
Updated: November 2026. Contains spoilers through the manga’s final arc.
Table of contents
Who is Kyoka Jiro?
Jiro is a Hero Course student in Class 1-A at U.A. High School. Her parents are both musicians, and she inherited her Quirk from her mother. She chose heroics over a music career, and her parents backed her decision.
| Detail | Information |
|---|---|
| Name variants | Kyoka Jiro, Kyouka Jirou, 耳郎 響香 |
| Hero name | Hearing Hero: Earphone Jack |
| School and class | U.A. High School, Hero Course, Class 1-A |
| Birthday | August 1 |
| Age | 15 at the start of the series, 16 from her first August 1 |
| Height | 154 cm |
| Quirk | Earphone Jack, inherited from her mother |
| Parents | Kyotoku Jiro (composer) and Mika Jiro (musician) |
| Voice actors | Kei Shindō (Japanese), Trina Nishimura (English) |
| Internships | Death Arms, then Gang Orca alongside Mezo Shoji |
| Band role | Vocals and bass |
How does Earphone Jack work?
Earphone Jack gives Jiro long earlobes shaped like audio cables, each ending in a plug. She can push the plugs into walls, floors or objects to pick up vibrations, and she can plug them into her speaker gear to turn her own heartbeat into sound.
The hearing side is the part she uses most. She finds opponents in the Battle Trial, counts hostages in a rescue, and tells her team when something large, such as Gigantomachia, is approaching. She can also use the plugs as a physical weapon, which she does when she stops Mineta peeking in the girls’ locker room.
Her limits are sound-based too. Against Present Mic’s Quirk in the first-term final exam, her ears bleed even while she cancels part of his sound with her own. Her heavy attacks also need her to stay in place and brace for the recoil.
What are Kyoka Jiro’s named techniques?
Her four named techniques all run through her costume’s amplifiers: boots early on, then headphones and wrist amps added in chapter 101.
| Technique | What it does | First seen |
|---|---|---|
| Heartbeat Distortion | Sends a shockwave of amplified heartbeat; used to deflect attacks and to break a bridge in Heroes: Rising | Chapter 104, episode 54 |
| Heartbeat Surround | Wide sound attack that stuns opponents | Chapter 208, episode 97 |
| Heartbeat Wall | A barrier of sound waves that pushes back an attacker | Chapter 319 |
| Heartbeat Surround: Legato | Her strongest Ultimate Move, fired with her single remaining jack against All For One | Chapter 355 |
What happens to Kyoka Jiro’s ear?
All For One blows off her left Earphone Jack and ear in manga chapter 355, during the Final War. The anime shows it in Season 7. She keeps fighting with her right jack and survives the war.
| Event | Injury |
|---|---|
| First-term final exam (chapters 60–66) | Ears bleed against Present Mic; she recovers |
| Provisional Hero License Exam (chapters 104–114) | Left ear and one arm amp damaged by an enemy Quirk; she passes the exam |
| Paranormal Liberation War (chapters 278–303) | Dabi’s flames hit her jack, leaving a burn scar |
| Final War (chapter 355) | Left jack and ear blown off by All For One |
Will Jiro get her ear back? The manga does not show it restored after chapter 355. She appears as a pro hero in the chapter 430 epilogue, and some fan wikis describe a prosthetic replacement, so check that chapter for the exact design.
Which chapters and episodes feature Jiro most?
Her biggest scenes are the Present Mic exam, the School Festival and the Final War. Episode numbers below are the anime’s overall numbering.
| Moment | Manga chapters | Anime episodes |
|---|---|---|
| Battle Trial with Kaminari | 8–11 | 6–8 |
| U.S.J. attack, Mountain Zone with Momo and Kaminari | 14–20 | 10–13 |
| Chooses the hero name Earphone Jack | 45 | 26 |
| Final exam against Present Mic with Koji Koda | 60–66 | 34–36 |
| Provisional Hero License Exam | 102–114 | 53–60 |
| U.A. School Festival band | 169–182 | 81–86 |
| Joint Training against Class 1-B | 207–209 | 97 |
| Paranormal Liberation War, Gigantomachia trap | 273–283 | 119–122 |
| Dark Hero arc, Heartbeat Wall against Deku | 319–327 | Later seasons |
| Final War, loses her left jack | 354–356 | Season 7 |
Two internship stories exist only in the anime: her training under Death Arms in episodes 27 and 32.
Does Jiro appear in the My Hero Academia movies?
Yes, in three of them. She has a supporting role in each.
| Film | Year | Her role |
|---|---|---|
| Two Heroes | 2018 | Uses Earphone Jack on I-Island to learn about the hostage situation, and helps the group climb the tower |
| Heroes: Rising | 2019 | Finds a lost boy on Nabu Island, then holds off Nine with Mashirao Ojiro and destroys a bridge with Heartbeat Distortion |
| World Heroes’ Mission | 2021 | Works in the Japan Task Force with Gang Orca and Shoji, searching for Trigger Bombs |
Why did Jiro choose heroics, and who is in the class band?
Jiro grew up around music but wanted to work as a hero. Her parents accepted that choice. Her father, who had cheered for All Might on TV, is shown to be proud of it. At the School Festival she sings for the whole class, and the performance is the high point of her early story.
| Member | Role |
|---|---|
| Kyoka Jiro | Vocals and bass, band leader |
| Momo Yaoyorozu | Piano |
| Katsuki Bakugo | Drums |
| Denki Kaminari | Guitar |
| Fumikage Tokoyami | Guitar |
Her dorm room shows the same taste: instruments, records and rock decor fill it, and her classmates see it in chapter 99. For a way to bring that look into a real room, see anime apartment decor.
What should you watch or read after Jiro’s story?
If you are still choosing a first series, the shonen anime guide compares episode counts and filler across the major titles. For a film-by-film franchise with a clear order, try the Pokémon movies in order.