thecosmicsapphic
Recent works
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Kiss Me (And I Might Drop Dead) by thecosmicsapphic
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
05 Jun 2026
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Summary
He was the reason Katsuki died, and now he was the reason his heart stopped.
In all the fairytales, a kiss could awaken one's true love.
But, Izuku's kiss made his true love drop dead.
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Katsuki's heart flatlines after his first kiss with Izuku and now Izuku refuses to kiss him. All Katsuki wants is to have a makeout session with his boyfriend. What's a guy got to do to get a smooch from the greatest hero of all time?
Series
- Part 4 of one shots to warm your soul
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Say Yes to Heaven (Say Yes to Me) by thecosmicsapphic
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
06 May 2026
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Summary
"No, you can't do this to me, Kacchan. You told me you didn't love me anymore. You can't just come to my show and mess with my head," Izuku said harshly, the memory of their break-up playing in his head like a never-ending nightmare.
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Katsuki breaks up with Izuku out of the blue one day, telling him that he doesn't love him anymore. Then he turns up at one of his concerts, and neither one of them can let go.
Series
- Part 3 of one shots to warm your soul
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I Can't Make You Love Me (If You Don't) by thecosmicsapphic
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
28 Apr 2026
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Summary
"So you went to America and got a fucking sense of fashion? Go figure," a very familiar voice said, and Izuku spun around, coming face to face with his childhood friend. Katsuki had only gotten more handsome and Izuku's heart was in his throat. Izuku quickly filled himself with every single ounce of casual confidence he could muster and grinned.
"My friend always said I could either be gay or a fashion disaster, but I had to pick a struggle," Izuku said with a shrug, "and I'm definitely not trying to be straight. Sorry ladies!" Izuku winked at Uraraka playfully. Kaminari's jaw dropped and Kirishima burst out laughing. Katsuki's eyebrows shot up, and Izuku caught a light rosy tint coloring to his cheeks.
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Or, Izuku rides the rollercoaster of emotions that comes with being Katsuki's friend when Izuku wants more.
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The Weight of Your Hand (Brings Me Back) by thecosmicsapphic
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
28 Apr 2026
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Summary
"I love you, Izuku. I want to be with you, not just competing for the rest of our lives, but truly be with you for the rest of our lives. I know you love me too. Your eyes are more honest than your mouth." Katsuki glanced at Izuku's lips.
"I do. I love you," Izuku responded quietly, the confession didn't feel like one that set him free though.
"We can't be together yet," Katsuki said sadly. The music in the background had somehow turned melancholic as well. "Not when you look at me and see a dead body."
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After the War, his friends all find ways to heal, but Izuku refuses to let go of his guilt. Lucky for him, Katsuki is there to give him a push in the right direction.
Series
- Part 1 of one shots to warm your soul
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I Will Be Waiting (Time After Time) by thecosmicsapphic
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
23 Feb 2026
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Summary
"We never see each other, you keep secrets from me, you spend all your time away from me, and when I try to talk to you, you always deflect. I love you so much, but this isn't a relationship Kacchan. I can't be with you if you can't tell me what's going on. If you leave that door and go to America, we're over."
Katsuki sighed and looked at Izuku with tired eyes. There wasn't any sadness or fear in his expression.
"I love you, Izuku. You're not useless at all. You're my everything. I'm doing it all for you."
Izuku sat down numbly in Katsuki's office as he watched him leave. He didn't expect it to end like this. He hadn't expected it to end at all. And Katsuki didn't even fight for him. He didn't want to go back to their little studio apartment so he went to his mother's house and cried in her arms.
'How could he say that he loved me and then just leave me?" Izuku whined.
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Or, Izuku and Katsuki get together at the end of their third year and eight years later, face cracks in their relationship. Katsuki makes sure that his efforts aren't in vain.
Recent series
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one shots to warm your soul by thecosmicsapphic
Fandom 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
05 Jun 2026
- Words:
- 19,140
- Works:
- 4
- Bookmarks:
- 2
Recent bookmarks
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...And How to Start by numbknee
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia
02 Dec 2020
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Summary
Midoriya left Japan two months ago, but Bakugou finally has an opportunity to visit him.
~~~
"He replayed that day of Midoriya’s going-away party, that moment, over and over again in his head without meaning to. Bakugou couldn’t stand it. He needed to see Midoriya, figure out what the hell they were going to do about… whatever the fuck their relationship was now. He had no clue what to expect when he finally did talk to Midoriya again, but Bakugou had to do this or else he was going to lose his goddamn mind."
Series
- Part 2 of Where to Begin/And How to Start
Bookmarked by thecosmicsapphic
11 Jun 2026
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Take what you want (I'm not afraid) by slysnakes for prettyykawa
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
10 Jul 2025
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Summary
“You smell so good,” Izuku moaned, mouthing at the glands and making sure to graze the sensitive skin with his fangs. Kacchan shuddered under him, instincts making him snap his teeth while lust made rock forward, grinding against Izuku’s thigh. “No omega could ever smell that good.”
Kacchan’s chest rumbled, pleased. “Damn right. So stop looking at them.”
“Never have,” Izuku muttered, though he was too focused on licking up the sweat clinging to Kacchan’s skin to argue much further.
Or, Katsuki gets jealous. Izuku fucks him about it.
Bookmarked by thecosmicsapphic
11 Jun 2026
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haven’t you heard? by comradekiwi
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
23 Oct 2022
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Summary
“Hello??” Kaminari gesticulated wildly, and now the other boys were peering at him too, similar shock dawning on their faces.
“Dude, you look… you look like you were mauled by a bear,” Sero ventured, too taken aback to even laugh.
Oh. Katsuki turned to Izuku, who was bright red and apparently trying to drown himself in his locker.
Series
- Part 4 of bkdk: fun-sized
- Language:
- English
- Words:
- 1,888
- Chapters:
- 1/1
- Collections:
- 9
- Comments:
- 35
- Kudos:
- 6,994
- Bookmarks:
- 968
- Hits:
- 65,820
Bookmarked by thecosmicsapphic
11 Jun 2026
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perennial by deadwriter16
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
09 Aug 2025
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Summary
“Kacchan,” Izuku says, and he’s practically begging now, the words dripping down his tongue with the same anguish that Katsuki feels tightening in his stomach. “Kacchan, how much are you hiding to make you sick like this?”
“So much,” Katsuki shakes his head, his own eyes burning with the sting of tears. “And nothing at all. There’s just the one thing, but fuck, it’s everything.”
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or: katsuki is hit with a truth quirk and is finally forced to admit his feelings for izuku, who he believes doesn't love him back.
Bookmarked by thecosmicsapphic
11 Jun 2026
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fluctuate by nicc
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
18 Aug 2025
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Summary
Kacchan is wound into every corner of his life, which means Izuku wants just a little more from everything he has.
Everywhere Izuku is, he's always wanting Kacchan.
Bookmarked by thecosmicsapphic
11 Jun 2026