CosmoNira



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  1. Public Bookmark 45

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    Summary

    Senku falls ill, and sends the villagers into a tailspin, especially Kohaku. In a panic, she takes over, relying on an old memory to find a way to save the ailing scientist. "I came close to losing Ruri because of something like this. But this time, I won't stand back and watch someone else I care deeply about suffer without doing a single thing about it."

    Updated on August 2, 2023!

    Language:
    English
    Words:
    10,152
    Chapters:
    1/1
    Comments:
    9
    Kudos:
    261
    Bookmarks:
    45
    Hits:
    3,845

    20 Oct 2025

  2. Public Bookmark 32

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    Summary

    “When you see a star streak across the sky, bring your hands up in prayer, and make a wish from deep within your chest. If you make a wish, it'll certainly come true one day.”

    Series
    Language:
    English
    Words:
    7,520
    Chapters:
    1/1
    Comments:
    11
    Kudos:
    216
    Bookmarks:
    32
    Hits:
    2,606

    19 Oct 2025

    Bookmarker's Notes

    That is so freaking raw and beautiful that I almost cried. SIMPLY PERFECT

  3. Public Bookmark 14

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    Summary

    Kohaku moves in with Senku, and living together turns out to be anything but simple. From everyday chores to late-night experiments, the two stumble into all kinds of silly, warm, and unexpected moments.

    A collection of stories about these two living together, facing the challenges that come with it and learning more about each other in the process.

    Contains minor spoilers from the manga.

    Language:
    English
    Words:
    46,585
    Chapters:
    12/12
    Comments:
    20
    Kudos:
    109
    Bookmarks:
    14
    Hits:
    2,500

    19 Oct 2025

  4. Public Bookmark 8

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    Summary

    While gathering supplied Senku and Kohaku are caught of guard by how hot it is, resulting in them being unfit to drag themselves back home until it cools down. After finding a place to wait for it to cool down a bit, Kohaku decides to go swimming in the river and Senku finds himself feeling things he'd never felt before...

    Flufftober 2025: Heatwave

    Series
    Language:
    English
    Words:
    2,019
    Chapters:
    1/1
    Collections:
    2
    Comments:
    8
    Kudos:
    53
    Bookmarks:
    8
    Hits:
    420

    16 Oct 2025

    Bookmarker's Notes

    Nice dialogue building

  5. Public Bookmark 58

    Tags
    Summary

    [Senhaku] Takes place at the end of the manga. When extremists threaten the safety of the scientists working to restore humanity, Xeno assigns Senkuu a bodyguard. Unfortunately for Senkuu, said bodyguard is just as good at teasing him as she is keeping him safe.

    Language:
    English
    Words:
    16,441
    Chapters:
    5/5
    Comments:
    51
    Kudos:
    359
    Bookmarks:
    58
    Hits:
    4,725

    25 Sep 2025