SereinSin
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To tame a song, to tame a heart by SereinSin
Fandoms: Haikyuu!!, How to Train Your Dragon (Animated Movies)
07 Sep 2025
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Summary
Surviving a Death Song was hard as it is. A too blunt jerk? okay your pushing it too far.
Atsumu didn’t mean to even meet the dragon, the poor thing is probably having second thoughts.
And currently merely surviving is too much.Instead, he gets Sakusa Kiyoomi: a fucking asshole who shows up at the worst possible time, thinks Atsumu is a nuisance and won’t stop butting in.
Or: Atsumu’s trying to win over a dragon and ignore the fact that his “enemy” is annoyingly attractive.
Recent bookmarks
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Atsumu needs to move out—like soon. Like in a month soon.
Sakusa Kiyoomi has an extra bedroom that—the person he thought was his friend—Suna has offered to Atsumu, without asking.
Nothing could possibly go wrong, right? A borderline agoraphobic streamer living with a larger than life man with perpetual younger twin syndrome, it’s obviously a match made in heaven.
Turns out it’s actually not so bad—but it’s definitely a bit awkward when Sakusa realizes that he’s falling in love for the first time with a loud bottle blonde who somehow, despite everything, respects his boundaries and never pushes him. Things get a little more messy when Atsumu walks in on a stream and Sakusa’s chat wants to know who the cute boy that’s suddenly living with him is.
Or; Sakusa Kiyoomi learning through a perfect stranger to let go, Miya Atsumu learning to enjoy the simple, quiet things and their journey to meeting somewhere in between.
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MSBY Black Jackals' Jacksuke-kun!! ☑ @MSBYJacksuke
Jacksuke here with an announcement!! 🥁🥁🥁 We've started a YouTube channel!! Trailer's already up and on Friday next week at 8p.m. JST, we'll tell you who you'll be seeing most often (not everyone wants to be on camera after all). See you all then!! 🖤🖤🖤
897🗨 • 16.4K⟲ • 33.3K♡Alternatively: The Various Happenings In, Around, and/or Because of the Official MSBY Black Jackals YouTube Channel.
Series
- Part 1 of Channel JACKAL+
- Language:
- English
- Words:
- 343,990
- Chapters:
- 33/33
- Collections:
- 17
- Comments:
- 2,200
- Kudos:
- 4,259
- Bookmarks:
- 1,005
- Hits:
- 262,700
Bookmarked by SereinSin
13 Aug 2025
Bookmarker's Notes
This might be my favourite fanfic, i know its fairly long but genuinely its so amazing, fluff, humor like no angst. I love this fic with my full heart I read this ages before I got my ao3 account and I have reread many many times its just so soft I love my msby boys so muchhhhh and we get like all of the other timeskip characters not even just pro volleyball players honestly this is canon for me, I have cried about this fic a lot and not for like it being upsetting or anything purely because of how much I adore it, the characterisation is On point the miya twins scenes had me crying genuinely writing this bookmark is starting the waterworks up. Thank you for this fanfic it is absolutely peak.
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Summary
Kiri had accepted her place as the 'freak', as the strange looking half-human na'vi that her peers found weird and unattractive, and had expected that things would stay that way forever. So when Rotxo, a relatively well-liked and popular boy that the Olo'eyktan himself took under his wing suddenly asks for permission to court her, she's thrust into a world of romance, drama, and whirlwind emotions she thought she'd never feel.
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In which Rotxo attempts to court Kiri, and Kiri rarely understands what's happening, but somehow it still works.
Bookmarked by SereinSin
23 Jan 2026
Bookmarker's Notes
I love them my babiesssss, I absolutely adore this fic like stop
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Summary
The Rider's Quadrant is one of the deadliest programs in all of Navarre. However, the reward for surviving is incredible, the chance to bond and ride your very own dragon. Those who think it's worth the risk are either brave, reckless or certifiably crazy.
Miya Atsumu may be all three, but he's not here for dragons, magic, or power. He's here for one reason only-to kill Sakusa Kiyoomi.
Sakuatsu Dragon Rider AU!
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Summary
Long before the twins were born, their village, Inarizaki made an arrangement with Itachiyama, a tribe of wolf shifters, that one son would become the mate to the tribe’s future chief. Atsumu, the oldest and omega son, was passed up in favor of Osamu, the youngest and a beta, to carry out this agreement. Whoever was chosen would take part in The Run, a series of trials that chosen omegas and betas must pass in order to demonstrate their worth as a mate for their alpha.
To everyone's disbelief and Inarizaki’s displeasure, Sakusa ignores Osamu's presence, ultimately choosing Atsumu as his mate instead.
Untrained and unprepared, Atsumu must now participate in The Run to prove not just to his family that he is capable of succeeding but also to his future mate who has chosen him.
- Language:
- English
- Words:
- 64,326
- Chapters:
- 10/?
- Collections:
- 1
- Comments:
- 261
- Kudos:
- 1,736
- Bookmarks:
- 355
- Hits:
- 45,233
Bookmarked by SereinSin
08 Aug 2025
Bookmarker's Notes
Read this when it first came out!! Love love love!! Can't wait for more updates!!