love-and-deepspacesylusx-reader

Sylus x Reader: The Love and Deepspace Crime Boss Fic Guide

May 9, 2026·Yumefics Team

Why Sylus Took Over the Love and Deepspace Fandom

When Sylus launched in version 2.0 of Love and Deepspace on July 15, 2024, no one in Infold Games predicted what happened next. Within a month he was the most-written character on AO3's Sylus tag), the most-uploaded character on Wattpad's Sylus collection, and the dominant subject of the Love and Deepspace Tumblr community. By the end of 2024 he had more fanfic than the original three love interests combined.

The reason is not that he is conventionally attractive (though he is, by design). The reason is that his character is built out of the three most powerful fanfic engines stacked into one body: he is morally compromised, he is canonically possessive, and he and the reader have a shared history that the reader has forgotten and he has not. Any one of those would be enough to spawn a fic ecosystem. All three together created a tidal wave.

Who Sylus Is in Canon

Sylus is the leader of Onychinus, the most powerful crime organization in the N109 Zone, a lawless district where the rules of normal Linkon City do not apply. He is 28, six foot two, has silver hair and red eyes, and is rarely seen without his two pet crows, both named Mephisto. He uses a red Evol that is tied to his unrevealed backstory and that the game keeps half-explained on purpose.

In the main story, the reader encounters him as a target. She is a Deepspace Hunter, technically aligned with the forces that are supposed to take down Onychinus. He is supposed to be the antagonist. The game then immediately undermines that setup by revealing that Sylus already knows her, has been watching her, and considers her something between a possession and an obligation he would never call by that name.

This is the canon. Fanfic does not invent the obsession. Fanfic just gives it room to breathe.

The Tropes That Define Sylus Fic

Enemies to lovers, no friends to lovers stop on the way. The reader and Sylus do not become friends. The dynamic is hostility, then attraction, then surrender. The most-kudosed Sylus fic on AO3 follows this exact arc and refuses to soften it. Readers come for the tension between her job and her feelings, not for a meet-cute.

Possessive love. Sylus calls the reader sweetie, kitten, and sometimes just mine. In canon. Fanfic takes this and runs. The fandom has a clear understanding that this is a fantasy, that real possessive behavior is not romantic, and that the fic exists in a register where the rules are different. Writers who try to flatten this into something safer find their fic ignored. Writers who lean in find their fic kudosed.

Dark romance. Tagged on AO3 as dark, morally grey, dub-con, and a dozen other warnings. The fandom is upfront about what it is. If you do not like dark romance, you will not like Sylus fic. If you do, this is one of the strongest writing communities producing it right now.

Caretaking. The flip side of the obsession. Sylus is canonically a man who tracks the reader's blood pressure, knows her sleep schedule, and would burn the city down for her. Fic loves the moments where this turns soft: him cooking, him bandaging her hands, him sitting next to her bed when she has a fever. The contrast between the violence and the gentleness is the entire emotional payoff.

Memory loss and recognition. The canon hint that Sylus and the reader knew each other before her current memories begin powers a huge subset of fic. Stories where she slowly remembers, stories where she never does, stories where he is the only one carrying their shared past.

Mafia AU. Already canon, just with the serial numbers filed off the sci-fi elements. Modern crime boss Sylus is one of the most-written AU types in the fandom.

What Makes a Good Sylus Fic

The writers who do this character well treat him as competent. Sylus is not a tortured boy who needs the reader to fix him. He is a man who has built a criminal empire, who knows exactly what he is, and who has chosen the reader on purpose. Fic that treats him as a project to be reformed misses the point. Fic that treats the relationship as a mutual recognition between two people who could destroy each other and choose not to is the version that gets the kudos.

The other thing the best Sylus fic does is give the reader teeth. She is a Deepspace Hunter in canon, not a damsel. She has her own Evol, her own competence, her own reasons to walk away. The tension only works if she could leave. The romance only works if she chooses not to.

The worst Sylus fic flattens the reader into a passive vessel for his attention. The best Sylus fic puts her at his eye level and lets the relationship be a negotiation between equals who happen to be on opposite sides of the law.

The Mephisto Problem

Every Sylus fic eventually has to figure out what to do with the crows. Mephisto and Mephisto are canon. They are everywhere in the game. They sit on his shoulder, they steal things, they show up uninvited in scenes. Fic that ignores them feels incomplete. Fic that overuses them turns into a comedy bit.

The best approach is to treat them like cats. Present in the background, occasionally relevant, never the focus unless the scene calls for it. If you write a domestic Sylus fic and the reader is making coffee in his kitchen, one of the Mephistos should be on the counter she is trying to use. That is the right amount of crow.

Where to Find the Best Sylus Fic

AO3 Sylus/Reader tag)**: sort by kudos, filter by complete only, and you have the canon of fanon for this character. The top 20 fics here represent the version of Sylus the fandom has collectively agreed on. New writers should read at least the top five before writing their own.

[Wattpad's Sylus tag](https://www.wattpad.com/stories/sylus) is where the long serial fics live. Word counts trend higher, updates are slower, the comment culture is more interactive. Good for readers who want a long burn and good for writers who want to build an audience over months instead of dropping a complete fic and disappearing.

Tumblr Sylus blogs post drabbles, headcanons, and aftercare lists. The snowballseal Sylus tag is one of the more active. Tumblr is also where you find the headcanon posts that fic writers later expand into full chapters.

[The Sylus wiki page](https://loveanddeepspace.fandom.com/wiki/Sylus) is the canon reference. If you need to check his height, his Evol, his backstory hints, or his exact relationship with the N109 Zone, the wiki is faster and more reliable than the game.

Sylus AU Ideas That Have Not Been Overused

Most obvious AUs are saturated. If you want to write Sylus fic that stands out in 2026, here are angles the fandom has not yet exhausted:

Pre-Onychinus. Sylus before he built the empire. A version of him that is still becoming the man he will be. Reader as the person who knew him then.

Post-canon retirement. Sylus has left the N109 Zone. The reader follows. Domestic fic in a small coastal town somewhere, with the past constantly threatening to catch up.

Reader as a rival crime boss. Instead of a Deepspace Hunter, the reader runs her own organization. Negotiation as foreplay. Mutual blackmail as a love language.

Sylus as the babysitter. Not a serious AU, but the comedy of forcing him into ordinary domestic situations is undermined by how genuinely good he is at it. Played for both humor and feelings.

Vampire AU. The fandom keeps almost writing this one. The red eyes and the immortality coding are right there. Lean in.

Reincarnation, his side. Most reincarnation fic is from the reader's POV slowly figuring out the past. Flip it. Sylus is the one who remembers. The whole story is him watching her not remember him and choosing to fall in love with her again from scratch.

Writing Sylus Without Losing the Reader

The single most common mistake in Sylus fic is making the reader smaller to make Sylus bigger. Resist this. Sylus is more interesting next to a reader who has her own Evol, her own contacts in the N109 Zone, her own opinions about his business, and her own line she will not let him cross. The relationship is not him dominating her. The relationship is two people who have chosen each other in spite of every reason not to.

Give the reader a name in your head even if you do not put it on the page. Give her a job she is good at. Give her a friend she calls when she needs to vent. The more solid she is as a person, the more weight Sylus's obsession with her actually carries.

If you want to spin up your own Sylus-coded character in a setting you control, Yumefics lets you configure a love interest with whatever traits you want, drop them into a universe you build, and generate serialized choose-your-own-adventure chapters in second person. You can write the version of the dynamic the game does not let you read.

Frequently Asked Questions

Q: Why is Sylus the most popular Love and Deepspace love interest?

He combines three powerful fanfic engines in one character: he is morally compromised (crime boss), he is canonically possessive (the game itself codes him this way), and he shares a hidden past with the reader. Any one of those would generate a strong fic following. All three together made him the most-written character in the fandom within a month of his July 2024 launch.

Q: Is Sylus fic mostly NSFW?

More than the other Love and Deepspace love interests, yes. AO3 filters show roughly two-thirds of Sylus fic is rated explicit or mature. Tumblr leans even further in that direction. Wattpad has more SFW Sylus fic because of platform rules. If you want SFW Sylus content, Wattpad and AO3 with the gen filter are your best options.

Q: Do Sylus fics have to be dark romance?

No, but the most-kudosed ones usually are. The character is built for it. You can write fluff Sylus, domestic Sylus, even comedy Sylus, and there is an audience for all of it. The dark romance fics just happen to dominate the rankings because they lean into what the canon already implies.

Q: How do I write Sylus in character?

Watch his memory cards and main story cutscenes on YouTube even if you do not play the game. His voice is specific: dry, amused, possessive without being cruel, capable of going cold in a way that is more frightening than yelling. He uses pet names (sweetie, kitten) and rarely raises his voice. He never apologizes directly but he changes his behavior when the reader pushes back. The fandom will notice if you get this wrong.

Q: What is the deal with the crows?

Mephisto and Mephisto (yes, both named Mephisto) are Sylus's canon pet crows. They are present in most of his scenes. Treat them like cats in your fic: present in the background, occasionally relevant, never the focus unless the scene specifically calls for it.