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I'm not gonna give up. A hero doesn't give up...!
~ Katsuma Shimano
Katsuma, do you still want to be a hero? I'm against it. It's dangerous. Besides, I know of someone even cooler than a hero. Daddy. He's always thinking of us and protecting us. I want you to be as cool as that.
~ Mahaoro Shimaro

Katsuma and Mahoro Shimano are major characters in the movie My Hero Academia: Heroes: Rising. They are residents of Nabu Island where Class 1-A are sent for their Hero Recommendation Work Project. However, Katsuma is targeted by the villain known as Nine and his group for his cell activation quirk, thus Class 1-A move in to protect the children.

Katsuma is voiced by Yuka Terasaki in the Japanese version and by Maxey Whitehead (who voiced Alphonse Elric in Fullmetal Alchemist) in English version, while Mahoro is voiced by Tomoyo Kurosawa in the Japanese version and by Dani Chambers (who voiced Becky Blackbell in Spy x Family) in the English version.

Personalities[]

Katsuma is a timid and soft-spoken boy who, unlike his sister, has shown to admire heroes and dreams of becoming one himself but is also unconfident in regarding the potential risks of his Quirk. Despite willing to aid in his sister's antics at first, he was also willing to go and apologise for disturbing them and making a false report. He also shows to care deeply for those around him, as he was willing to give up his Quirk to Nine if it meant that the villains wouldn't harm anybody else. When Mahoro was threatened by Nine, Katsuma was willing to give up his Quirk if it meant saving his sister's life. Afterwards, Katsuma becomes more willing and determined to master his Quirk and become a hero just like Izuku Midoriya.

Mahoro, while not necessarily a bad kid, has shown some rebellious behavior. Due to her father working overseas as well as her mother's death, she has shown to be protective of her younger brother. At the same time though, Mahoro believes that heroes aren't as great as they appear to be and used her Hologram Quirk to purposefully cause trouble for Class 1-A by summoning a hologram of a giant mantis villain. Although this came at the cost of Katsuki Bakugo being enraged at the two children and causing them to flee in fear. Afterwards, Mahoro used her Quirk to send an S.O.S. to warn the rest of Class 1-A that Midoriya and Bakugo were in danger, and later cried while seeing them fight Nine showing that she did come around after seeing the young heroes have the willingness to protect them both. Afterwards, she thanks them both for protecting them and joyfully waves her goodbyes alongside her brother.

History[]

The Shimano siblings make their debut when Ochaco gets a call from a little girl who lost her brother somewhere on the island, and calls across the room and asks if anyone can help her to find the lost kid. Izuku and Kyoka volunteer. The three search the island and find the little boy named Katsuma Shimano at a nearby park. His older sister, Mahoro Shimano suddenly appears and scolds Izuku for taking so long to find them, revealing that she was timing Izuku and the others on their arrival to their location.

She angrily scowls at Izuku because he took about an hour late to locate her brother. Izuku felt embarrassed and ashamed before Mahoro disapproves of him for being a hero, as she doesn't appear to be fond of heroes, and walks away with her brother. Ochaco and Kyoka are confused by the exchange, but Izuku doesn't mind being scolded by the child. He is just happy the little boy is with his sister.

Elsewhere, Mahoro gets Katsuma and herself some ice cream while making rude comments about U.A. High's students and their inability to respond to danger despite the island's low crime rate. Katsuma doesn't seem as bothered as his sister because Izuku was kind to him, so Mahoro formulates a plan to make her brother change his mind about the heroes.

Later on the night, Izuku is practicing his kicks to keep training on the One For All. He thinks about his Quirk and how he can train himself to be able to use this power that All Might has given him. Coming back from his patrol, Katsuki finds Izuku training and tells him to hurry and master his Quirk. They have an exchange over who will be the No. 1 Hero before it's interrupted by Katsuma. The young boy tells them a villain has appeared. Izuku is surprised by the presence of a villain before Katsuki pushes him aside, demanding Katsuma to explain himself better.

At Nabu Island, Katsuki rushes over to where Katsuma said the villain is located, carrying the little kid and being followed by Izuku. Katsuma tells him he saw the villain at the ancient castle ruins located in Mount Shiroyama, on a smaller island next to Nabu. Katsuki arrives on scene first to confront the villain: a giant praying mantis wreaking havoc on the side of the hill. Katsuki uses Stun Grenade to blind it, but he notices something wrong and stops attacking.

Izuku arrives shortly afterward and sees the praying mantis attacking Katsuki, but it phases through him. Katsuki generates a huge explosion that makes Mahoro fall from her hiding place. The giant mantis disappears, confirming Katsuki's suspicions that the monster was fake because there was no shadow beneath it. The creature was created by Mahoro's Quirk: Hologram.

Katsuki is furious as he shouts to the girl if she's trying to make fun of him. He tells her that he's aiming to be Number 1 and doesn't need stupid kids to play pranks on him. Katsuki scolds Mahoro and Katsuma with an increasingly angry face for having faked a villain attack, forcing Izuku to restrain him for fear that he will hurt the kids. Katsuma and Mahoro scurry off while Katsuki struggles to get Izuku off him.

The kids end up in a sugar cane field as they look at the stars. Mahoro complains about Katsuki, saying that even though he wants to be a hero he seems more like a villain, reinforcing her dislike for heroes because they're all talk. Katsuma tells him that despite that those two boys went to help them. Mahoro is aware that her little brother is fond of heroes and wants to be one, but she says their father is better than any hero.

Back at Nabu Island, the class resumes to their daily schedule hero work. Izuku comes across Katsuma again, who apologizes for his sister's prank last night. Katsuki also listens to Katsuma's apology as he is outside standing on the veranda. He listens to Katsuma explaining that Mahoro was trying to prove that the heroes wouldn't come help but they did just like Katsuma believed.

Izuku notes that Katsuma has an Edgeshot pin on his bag, and asks him if he likes heroes. Katsuma says that he really admires Heroes and wants to be one even though his Quirk isn't suited for combat. However, his sister dislikes heroes and wants to discourage him from ever becoming one. Izuku realizes that Mahoro doesn't quite hate heroes, she just wants to stop Katsuma from thinking of becoming one because she was afraid that hero work is dangerous, which reminds him of how his mother, Inko, was worried about his well-being.

Izuku assures Katsuma that anyone can be a hero as long as they focus on putting in their effort. After Katsuma leaves, one of the residents tells Izuku that Katsuma and Mahoro live alone with their father on the island. Their mother passed away from a particular illness when they were very young, and the village watches after them while their father is away working. That's why Mahoro is very protective of her brother. Katsuki overhears everything from the balcony.

Powers & Abilities[]

Cell Activation

Katsuma uses his Quirk on Izuku and Katsuki to heal their wounds.

  • Cell Activation: Katsuma's Quirk allows him to activate the cell's in another person's body through touch, which enhances their recovery time and can even improve their physical conditioning. The power of this Quirk was shown when he used it on both Midoriya and Bakugo, who had both been struck and nearly killed by powerful lightning blasts from Nine's Weather Manipulation Quirk.
    Overusing Cell Activation can drain Katsuma's stamina and cause him fatigue. Unlike his father, he seemed to be able to use this Quirk on anyone regardless of blood type.
Hologram

Mahoro uses her Quirk to send a signal in case of an emergency.

  • Hologram: Mahoro's Quirk allows her to create holograms, as shown when she created a gigantic Mantis Villain to fool Bakugo and Midoriya, and later a pink chinese guardian lion in an attempt to scare Nine away. Mahoro can use this Quirk to stage pranks, as well as send emergency signals as she did to warn the rest of Class 1-A that Midoriya and Bakugo were in danger.
    These holograms do not possess shadows, and can be knocked away with enough force or if Mahoro loses focus.

Navigation[]

           Boku no Hero Academia LogoHeroes

U.A. High School
Teachers: Ectoplasm | Higari Maijima | Hizashi Yamada | Ken Ishiyama | Nemuri Kayama | Nezu | Ryo Inui | Sekijiro Kan | Shota Aizawa | Thirteen | Toshinori Yagi | Chiyo Shuzenji
Class 1-A: Denki Kaminari | Eijiro Kirishima | Fumikage Tokoyami (Dark Shadow) | Hanta Sero | Izuku Midoriya | Katsuki Bakugo | Koji Koda | Kyoka Jiro | Mashirao Ojiro | Mezo Shoji | Mina Ashido | Minoru Mineta | Momo Yaoyorozu | Ochaco Uraraka | Rikido Sato | Shoto Todoroki | Tenya Iida | Toru Hagakure | Tsuyu Asui | Yuga Aoyama
Class 1-B: Hiryu Rin | Ibara Shiozaki | Itsuka Kendo | Jurota Shishida | Juzo Honenuki | Kinoko Komori | Kojiro Bondo | Kosei Tsubaraba | Manga Fukidashi | Neito Monoma | Nirengeki Shoda | Pony Tsunotori | Reiko Yanagi | Sen Kaibara | Setsuna Tokage | Shihai Kuroiro | Tetsutetsu Tetsutetsu | Togaru Kamakiri | Yosetsu Awase | Yui Kodai
The Big Three: Mirio Togata | Nejire Hado | Tamaki Amajiki
Other Classes: Hitoshi Shinso | Mei Hatsume

Pro Heroes
All Might | Backdraft | Best Jeanist | Bubble Girl | Burnin | Cementoss | Centipeder | Crimson Riot | Crust | Death Arms | Ectoplasm | Edgeshot | Endeavor | Eraser Head | Fat Gum | Fourth Kind | Gang Orca | Gran Torino | Gunhead | Hawks | Ingenium | Kamui Woods | Kesagiriman | Majestic | Manual | Midnight | Mister Blaster | Mirko | Ms. Joke | Mt. Lady | Nana Shimura | Present Mic | Rock Lock | Ryukyu | Star and Stripe | Selkie | Shishido | Sir Nighteye | Sirius | Snatch | Uwabami | Wash | X-Less | Yoroi Musha
Wild, Wild Pussycats: Mandalay | Pixie Bob | Ragdoll | Tiger

Other Schools
Camie Utsushimi | Inasa Yoarashi | Seiji Shishikura | Nagamasa Mora | Yo Shindo | Tatami Nakagame | Itejiro Toteki | Shikkui Makabe

Movies
Melissa Shield | David Shield | Katsuma & Mahoro Shimano | Rody Soul (Pino) | Giulio Gandini

Other
Eri | Oboro Shirakumo | Rapt Tokage | Gentle Criminal | Naomasa Tsukauchi | Kenji Tsuragamae | La Brava | Lady Nagant | Soga Kugisaki

One For All Users
Yoichi Shigaraki | Kudo | Bruce | Hikage Shinomori | Daigoro Banjo | En Tayutai | Nana Shimura | Toshinori Yagi | Izuku Midoriya

Vigilantes
Knuckleduster | Pop☆Step | The Crawler

Families
Iida Family

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