Toxicivy



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  1. Public Bookmark 10

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    Summary

    “Explosions…” Katsuki whispered suddenly, lifting his hands slightly, even though they trembled from exhaustion.

    “That’s your quirk, son,” Masaru said lightly.

    Katsuki shook his head faintly. “No, Dad. It’s his.”

    Masaru blinked.

    “’Cause he makes my heart go boom.” He slurred, “boom, boom, fucking boom.”

    “Is he awake?” Mitsuki breathed, her voice tight despite her attempt to sound steady.

    “He’s… something, alright,” he replied with a fond chuckle, though there was relief hidden beneath it.

     

    OR: Katsuki’s high off anesthesia and says a lot of bs

    Language:
    English
    Words:
    2,797
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    82
    Bookmarks:
    10
    Hits:
    492

    26 Feb 2026

  2. Public Bookmark 22

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    Izuku’s walking towards his class when he’s hit by a shoulder rather harshly, making him step back two steps to avoid falling. Kacchan is already in their classroom, so he has to be more alert, since people think that picking up on him when he’s alone is easier than when they’re together.

    “Watch yourself, quirkless bitch”

    Those words register faster than who said them, making his gaze raise, looking at the guy who crashed against him.

    “Oh, I thought you were still in the hospital”

    “Mind your fucking bussiness” the attacker answers with barely disguised rage, in this game, the first one to get angry is the first one to lose.

    or

    Ktdk if Izuku wasn't so kind and matched Katsuki's meanness a little more.

    Series
    Language:
    English
    Words:
    8,538
    Chapters:
    1/1
    Comments:
    6
    Kudos:
    120
    Bookmarks:
    22
    Hits:
    1,112

    25 Feb 2026

  3. Public Bookmark *

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    "Dynamight, you're amazing!" A familiar voice gushed, and Izuku could just picture the stars in his eyes as he spoke.

    "Shit. Is that so?" An even more familiar voice drawled amusedly. "Tell me more," Katsuki said in a flirtatious tone that Izuku had never heard before. He had never felt jealousy like this before, so potently and physically in his body. He wanted to reach out and grab Katsuki, so he clenched his fists in his lap instead.

    "The way you utilize your quirk is amazing! Yes, you have a strong quirk, but the control you have over it and the way you apply it in battle is what makes it amazing. You make it amazing," The hero talking to Katsuki was his ex-student, whom Izuku held in high esteem. But the lines he was feeding Katsuki were taken word for word from Izuku's lesson on quirk usage and control. Unfortunately, by the way Katsuki was leaning in and tilting his head, Izuku's words had worked when they came from someone else.

    ----------

    5 times Izuku got jealous over his Kacchan and the one time Katsuki got jealous over his Deku.

    Language:
    English
    Words:
    10,379
    Chapters:
    6/6
    Comments:
    75
    Kudos:
    848
    Bookmarks:
    112
    Hits:
    10,389

    25 Feb 2026

  4. Public Bookmark 13

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    Six-year-old Izuku freed a fierce young merman from a fishing line, sparking a secret friendship that lasted through the years.

    The gentle dreamer and the golden-tailed Katsuki met in hidden coves, sharing laughter, stories, and growing longing.

    When Izuku joined a merchant ship to survive, Katsuki surfaced one final time. They confessed their feelings and sealed their bond with a kiss beneath the moon.
    For one perfect night, everything felt right.

    Then came harbor whispers: pirates were hunting merfolk, their target the lost prince of the deep-fierce, explosive, royal.

    Izuku's heart stopped.

    The prince they hunted... was his Katsuki.

    Language:
    English
    Words:
    69,688
    Chapters:
    24/24
    Comments:
    6
    Kudos:
    51
    Bookmarks:
    13
    Hits:
    811

    24 Feb 2026

  5. Public Bookmark 7

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    As Izuku is leaving the izakaya after his class reunion, he realizes that his new hero suit could mean something more from Katsuki. With twenty-five years of their friendship to consider, he isn't about to let him walk away.

    His only problem now is that Katsuki can be a complete idiot.

    Language:
    English
    Words:
    4,429
    Chapters:
    1/1
    Comments:
    5
    Kudos:
    47
    Bookmarks:
    7
    Hits:
    305

    23 Feb 2026