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Anime series

My One-Hit Kill Sister

Latest episode

S1 E12 · Big Sister Forever

About My One-Hit Kill Sister

My One-Hit Kill Sister is a comedy and sci-fi & fantasy anime series that premiered on TOKYO MX on April 8, 2023. It has 1 season and 12 episodes so far and has ended. The latest episode, Season 1 Episode 12 "Big Sister Forever", aired on June 23, 2023.

Asahi, a boy who loves video games is killed in a traffic accident and ends up in another world. He tries to enjoy the otherworldly adventuring life he's always dreamed of, but his stats are on the level of an NPC's. He is in big trouble and is being chased by a monster when he hears, "Fear not, little brother!" and the monster is killed in one hit by Asahi's older sister, Maya, who followed Asahi to this world. So Maya has acquired some seriously OP skills, but she takes her adoration of her younger brother to extremes. Thus begins their story about an overpowered older sister with a brother complex and a younger brother with the weakest of stats in another world.

  • Comedy
  • Sci-Fi & Fantasy
  • Animation
  • Action & Adventure

Last updated

Episodes

12 episodes · 1 season

Season 1

2023 · 12 episodes · Last episode: 3 years ago

My One-Hit Kill Sister Season 1 release dates →
  1. My One-Hit Kill Sister S1 E12 still E12

    12. Big Sister Forever

    Finale

    After a heavy rain, the city is victim of what appears to be a flood. A closer examination will quickly prove to Asahi that this is not the case: the entire lower part of the city has been attacked by a giant slime, and moreover, it did not come on its own initiative...

  2. My One-Hit Kill Sister S1 E11 still E11

    11. Shark from Another World

    Asahi is given a quest to hunt down sharks that are attacking a local beach. Maya says that just the two of them should go instead of taking the whole Super Asahi Legion. But when they arrive, the whole party is already there! And Kuon has some bad news.

  3. My One-Hit Kill Sister S1 E10 still E10

    10. My Amazing Little Brother

    Kuon asks Asahi for a favor. Gloria is challenging herself for the sake of her future, and she needs Asahi's help! Or does she? Later, Asahi considers making a big change to his life as an adventurer and goes to Tanya for advice.

  4. My One-Hit Kill Sister S1 E9 still E9

    9. The Preferred Form of a Big Sister

    Asahi and Maya go out on a gathering quest. Sophie joins them, but Asahi manages to pair Sophie and Maya so he can go off on his own. When he’s ambushed by goblins, an unexpected blast of dark fire reminds him of the first time he met Kilmaria.

  5. My One-Hit Kill Sister S1 E8 still E8

    8. I Can't Raise My Sword Against a Girl

    Asahi is on a quest to take down a party who uses its status for evil, but one of their crimes hits a little close to home—falsifying ranks. An adventurer who is suspicious of Asahi decides to take a closer look at him. Will Asahi’s secret be discovered?

  6. My One-Hit Kill Sister S1 E7 still E7

    7. Portrait of a Certain Big Sister and Little Brother

    Asahi and Maya didn’t always have the relationship they do now. Once, it was much different. A strange twist of fate makes Maya remember the old Asahi. Later, Asahi learns a shocking truth about Tanya and has to prove his mettle as an adventurer!

  7. My One-Hit Kill Sister S1 E6 still E6

    6. The Hero and the Big Sister

    Asahi is soloing a quest to get rid of some wolves. Maya is overjoyed with his improved strength, but she still worries for his safety. If only they had a healer in their party. Back in town, Asahi bumps into a strange girl on the street.

  8. My One-Hit Kill Sister S1 E5 still E5

    5. The Ikusaba Brother and Sister's Big Dungeon Exploration Plan

    A new dungeon entrance has been discovered! Tanya asks Asahi to explore it to see if it’s safe. If it is, it will be opened up to all adventurers of every rank. Asahi is excited about taking on a quest by himself, but, alas, it is not to be.

  9. My One-Hit Kill Sister S1 E4 still E4

    4. The Big Plan for the Home of the Ikusaba Brother and Sister

    Asahi has run out of money to pay for his lodgings again, so he goes to Tanya to ask for a quest with a high reward. It turns out that Tanya has just the thing, one with a house as the reward! But to get it, they’ll have to rid it of its current occupant.

  10. My One-Hit Kill Sister S1 E3 still E3

    3. My Sister, Maya-nee, Is All I Need

    Asahi is still looking for ways to level up, but working with his sister has its limits. So, he goes to the Guild with the thought of forming a party with other people. On the way back, he notices some thugs hassling a drunk who looks a bit familiar.

  11. My One-Hit Kill Sister S1 E2 still E2

    2. You Call Me Your Sister?

    Asahi takes on an easy quest gathering mushrooms to gain experience points, but it ends up being more than he bargained for when a bear appears! He flees right into an unexpected, warm embrace. The softness, the strength… Wait. It’s not Maya-nee?!

  12. My One-Hit Kill Sister S1 E1 still E1

    1. Did You Call for Your Big Sister?

    Asahi is your average game otaku. Just when he thinks his life is over, he gets another chance in a world that seems just like an RPG! But he doesn’t have the cheat skills that isekai heroes usually have. Instead, someone familiar swoops in to save him.

Cast & crew

  • Reiko Suzuki

    Reiko Suzuki

    Hoang (voice)

  • Masafumi Kimura

    Masafumi Kimura

    Deriven (voice)

  • Yu Kitada

    Yu Kitada

    Ork First Son (voice)

  • Masashi Yamane

    Masashi Yamane

    Ork Second Son (voice)

  • Yoshinori Nakayama

    Yoshinori Nakayama

    Ork Third Son (voice)

  • Kanon Takao

    Kanon Takao

    Ann (voice)

  • Shinya Takahashi

    Shinya Takahashi

    Shopkeeper (voice)

  • Miyu Hanasaki

    Miyu Hanasaki

    Shopkeeper's Daughter (voice)

  • Kakeru Itou

    Knight (voice)

  • Suzuna Kinoshita

    Suzuna Kinoshita

    Girl (voice)

  • Akari Miyazaki

    Akari Miyazaki

    Resident (voice)

  • Motomu Kiyokawa

    Motomu Kiyokawa

    Village Chief (voice)

My One-Hit Kill Sister FAQ

Will there be new episodes of My One-Hit Kill Sister?

My One-Hit Kill Sister has ended, so no new episodes are scheduled. The final episode aired on June 23, 2023.

When did the latest episode of My One-Hit Kill Sister come out?

The most recent episode of My One-Hit Kill Sister, Season 1 Episode 12 "Big Sister Forever", aired on June 23, 2023.

How many seasons of My One-Hit Kill Sister are there?

My One-Hit Kill Sister has 1 season with 12 episodes in total.

When did My One-Hit Kill Sister first air?

My One-Hit Kill Sister first aired on TOKYO MX on April 8, 2023.

How do I get notified when new episodes of My One-Hit Kill Sister are released?

Download the Streambay app, follow My One-Hit Kill Sister, and you'll get a push notification the moment each new episode is released.

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