Astreinomical



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  1. Public Bookmark 12

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    Summary

    “Your boundary,” Kou says aloud. He's coming to some understandings. “It… doesn't listen to your requests? It doesn't do what you want?”

    Mitsuba glowers. His hair is sticking up in a way that makes him look almost catlike, as though he's trying to make himself look bigger.

    “Fuck you,” he says, but quieter this time. “No, it doesn't. Not most of the time. I don't know what I'm doing wrong, exactly - if I'm not authoritative enough, if there's instructions I'm supposed to be following that no one told me, if it just doesn't like me as much as the last Number Three. I don't know.”

    He turns around to glance at his bed, expression tightening. His face is flushed pink with embarrassment.

    “I'm kind of afraid of it,” he mutters, so soft Kou almost doesn't catch it.
    -
    After a supernatural attack that leaves Kou too disheveled to go home and face his brother, Mitsuba reluctantly allows him into his boundary to clean up. However, the Hell of Mirrors has other plans for Kou.

    Series
    Language:
    English
    Words:
    23,595
    Chapters:
    2/2
    Comments:
    44
    Kudos:
    238
    Bookmarks:
    12
    Hits:
    2,357

    16 May 2026

    Bookmarker's Notes

    I'm not lying when I said this series just gets better and better each read. Holy shit this was soul wretching

  2. Public Bookmark 13

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    Summary

    “Kou,” Mrs Mitsuba asks. “You're from an exorcist family, is that correct?”

    He opens his mouth, but it's suddenly dry and he's unable to speak for a moment. She can't be asking him this for a good reason, and his mind races with a million thoughts. It's not possible that she's started seeing supernaturals, is it? Kou really hopes not. Explaining Mitsuba to her would be a nightmare.

    “I am,” he says. “The Minamoto clan has been full of exorcists for generations. Why do you ask?”

    She bites her lip, letting out a soft sigh through her nose. “It may seem… silly what I'm about to say,” she admits. “But I believe… I believe I may be being haunted by my son.”
    -
    After a startling admission from Mrs Mitsuba, Kou volunteers to perform a ritual to determine whether there's a supernatural in her home.

    Series
    Language:
    English
    Words:
    18,950
    Chapters:
    2/2
    Comments:
    26
    Kudos:
    193
    Bookmarks:
    13
    Hits:
    1,540

    14 May 2026

    Bookmarker's Notes

    WAHSHDKDHJD 😭😭😭😭😭 The angst in this was so heartbreaking

  3. Rec 12

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    Summary

    Mitsuba takes Kou's hand in his and squeezes it, so tight it almost hurts. “Take me somewhere,” he says, and when he looks at Kou, there's a familiar desperation written across his face. “Anywhere. I want to be distracted. I don't want to think about anything.”

    Kou is understandably terrified of the situation and what might be going on, but he cares about Mitsuba more than he'd ever like to admit. So of course, when he wants something, he'll give it to him.

    “Ok,” he says. “I have an idea of where to take you.”
    -
    Mitsuba's been acting strange lately. Kou takes him out for the day to try and improve his mood.

    A sequel to And I'm Your Man, context not necessarily required.

    Series
    Language:
    English
    Words:
    17,721
    Chapters:
    1/1
    Comments:
    53
    Kudos:
    194
    Bookmarks:
    12
    Hits:
    1,599

    13 May 2026

    Bookmarker's Notes

    Every mitsukouer should read this series

  4. Public Bookmark 30

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    Mitsuba whines like a wounded animal, and as Kou stands up and walks around the table to get to him, he catches a glimpse of his eyes. Something dark and desperate lurks there, and it's the harshest reminder of the fact that his friend isn't actually human that Kou's received in a while. If it weren't for the clear unhappiness written across his face, the wobble of his lips and the shine in his eyes, he might remind Kou a little of Tsukasa.

    “You're hungry,” he says faintly. “Actually hungry, not sushi hungry.”

    Mitsuba exhales uneasily and lays his head down on the table. “No shit, genius."
    -
    Mitsuba comes to see Kou late at night for seemingly no real reason at all. Kou wants to find out why, but is incapable of saying no to his friend's every ridiculous wish along the way.

    Series
    Language:
    English
    Words:
    11,986
    Chapters:
    1/1
    Comments:
    49
    Kudos:
    259
    Bookmarks:
    30
    Hits:
    2,595

    12 May 2026

    Bookmarker's Notes

    Lovelovelove this

  5. Public Bookmark 25

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    "Nii-chan, have you ever heard of coughing up flower petals?" 

    "Excuse me?"

    "Hypothetically, though. Obviously, that's not... real."

    Or: Kou suffers from Hanahaki Disease, and the more time he spends with Mitsuba, the worse his condition gets. But maybe he would rather die rather than ever letting Mitsuba go.

    Language:
    English
    Words:
    33,926
    Chapters:
    9/?
    Comments:
    170
    Kudos:
    138
    Bookmarks:
    25
    Hits:
    1,716

    28 Apr 2026

    Bookmarker's Notes

    Caught that beabadoobee reference in the title ! Love the fic so far. I think the writing really captures their dynamic well