deathkiis
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A Guide on How Sirens Live and Breed by octopot4to
Fandoms: Blue Lock (Manga), Blue Lock (Anime)
02 Apr 2025
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Summary
Kaiser smiles gleefully at him. He’s mouthing something that Isagi can’t quite make out, but from the way the siren points his index finger back and forth between them, it goes like a challenge.
A bet.
Watching Kaiser’s delicate lips move, Isagi, not even sure what possesses him, somehow understands Kaiser.
Let’s bet whether you’ll survive me next time.
A fight declaration, it seems.
After graduating from a renowned academy, Isagi found a new job at a research institute. He is tasked to study Kaiser, a hostile and abused siren, for the sake of humanity’s knowledge of mythical creatures. The fallout is simple—he could be killed.
Yet Isagi survives his first encounter with Kaiser, and now the siren acknowledges him as something other than potential food—like his fateful mate.
Kaisagi Week Day 2 (NSFW): "We're all alone now.”
- Language:
- English
- Words:
- 38,697
- Chapters:
- 6/6
- Collections:
- 1
- Comments:
- 333
- Kudos:
- 2,703
- Bookmarks:
- 400
- Hits:
- 40,594
Bookmarked by deathkiis
22 Feb 2026
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Red Eyeliner by moonlit-nightsx (moonlit_nightsx)
Fandoms: Blue Lock (Manga), Blue Lock (Anime)
29 Apr 2023
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Summary
When Isagi accidentally sprains Kaiser's fingers, he can't practice, he can't play in the game, and he can't do his own fucking eyeliner. Isagi can help with exactly one of those things.
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“Close your eyes,” Isagi murmurs, and Kaiser shuts his eyes obediently, the brush cold against his skin. A moment of silence, and then, “Sorry, angle’s a little off…,” and Isagi invades his senses even further. Kaiser feels a dip in the bed beside one of his thighs, Isagi’s knee knocking into him. The hand touching his chin skims down the side of his neck to settle on his shoulder, steadying himself.
He should really remind Isagi of the time with an antagonizing quip and get him to fuck off. But Isagi looks fucking angelic leaning over him like this, and Kaiser never liked doing things halfway.
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It’s so much, Kaiser thinks. Everything feels as if it’s in hyper-focus, every sense amplified to the max. Kissing Isagi feels like metavision does, he thinks, and he wonders if Isagi feels the same.
- Language:
- English
- Words:
- 13,712
- Chapters:
- 3/3
- Collections:
- 3
- Comments:
- 133
- Kudos:
- 3,333
- Bookmarks:
- 618
- Hits:
- 38,331
Bookmarked by deathkiis
30 Jan 2026
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you have already left kudos here by juryrouge
Fandoms: Blue Lock (Manga), Blue Lock (Anime)
26 Apr 2025
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Summary
Half of Bastard München’s ace duo and the former heart of Blue Lock, Isagi Yoichi, would say his tentative friendship with Kaiser is contentious at best, strife with taunting remarks and razor-sharp words, and sometimes cut by strange moments of warm companionship. Everything begins to change when Isagi stumbles upon a site known as Archive of Our Own and falls down a rabbit hole simply tagged as ‘KaiSagi.’
The other half of Bastard München’s ace duo and former star of the New Generation World XI, Michael Kaiser, happens to moonlight as a Big Name Fan of BLTV and, in his spare time, as one of the most prolific KaiSagi authors on AO3.
Chaos and shenanigans ensue.
Series
- Part 1 of thank you for leaving kudos
- Language:
- English
- Words:
- 22,957
- Chapters:
- 8/?
- Collections:
- 1
- Comments:
- 499
- Kudos:
- 1,598
- Bookmarks:
- 244
- Hits:
- 19,612
Bookmarked by deathkiis
30 Jan 2026
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Perhaps "Fuck off" might be too kind by numberoneisagifan
Fandoms: Blue Lock (Manga), Blue Lock (Anime)
28 Nov 2023
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Summary
“Is that a gun in your pocket or are you just happy to see me,” Kaiser says, his hands coming up to catch Isagi by his hips as he crashes onto Kaiser and they hit the floor.
“Actually, it’s a knife,” he says as he adjusts himself in Kaiser’s lap, flipping his suit jacket up and pulling his throwing knife out, lodging it into the neck of the man behind Kaiser. He climbs off of Kaiser, helping him up. Hot blood is sprayed all over his clothes and face, and he sticks his tongue out in disgust. Kaiser grins like a mad man, and he wipes some of the viscous, red gore off of Isagi’s cheek gently.
- Language:
- English
- Words:
- 105,169
- Chapters:
- 9/9
- Comments:
- 176
- Kudos:
- 1,232
- Bookmarks:
- 270
- Hits:
- 38,866
Bookmarked by deathkiis
19 Jan 2026
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Japan’s Best High School, Blue Lock High, Year one. by R1nSHU1AL
Fandoms: Blue Lock (Manga), Blue Lock (Anime)
19 Feb 2026
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Summary
In which all Isagi Yoichi desired was to be a background character and live a normal life, but instead was thrown into the best school in Japan that was nothing like he expected.
Fine, his plan now is to be an NPC.
Unfortunately for him, the universe and a certain German have other plans for him.
Or
Not your usual Blue Lock High School
Bookmarked by deathkiis
12 Jan 2026