The Flower That Bound Them
When a shy, doll-like girl in the Demon Slayer Corps accidentally touches an ancient fertility flower with her betrothed, the Wind Hashira, they must face an unexpected pregnancy that shocks the entire Hashira family.
You may also like

Until Blood Do Us Part
Visperia
Sent to a secluded mansion as the promised bride of an ancient vampire household, you discover that eight brides arrived before you, yet every wedding portrait bears your face.

Tengen's neglected forth wife
IrisCherryveil

Dropped Into the Infinity Castle
Riku
In this Demon Slayer fandom story, a snapped biwa string tears open a random door into Muzan's shifting fortress — and drops you right into a meeting of the Upper Ranks.

Just friends and sex - Satoru Gojo
Akane 🍃
Friends with benefits, that was the deal. Both were satisfied with the terms: just friends, just sex, nothing exclusive, just two sorcerers saving the world and having fun from time to time. So nothing could go wrong, right?

Cursed Betrothal: Arranged Marriage AU
𝓴𝓲𝓻𝓫𝔂 (。•ᴗ•。)
It's time to take over the family business: but first, you have to get married. Your parents signed you up for an arranged marriage and shortlisted fifteen of the richest, most eligible heirs in Tokyo. The contracts are already drafted. All you have to do is pick one. So you decide to torch it. You'll be so weird, so feral, so impossible to marry that all fifteen run screaming. It backfires catastrophically. Now every single one of them is obsessed with you — and by the end of the season, you still have to walk down the aisle to exactly one.

Girl In An All Boy Academy : MHA AU
Visperia
You are the one girl in a ane all-boys academy. Hundreds of secrets waiting to unravel. Will you maintain your secret?

His Doe
axa
Offered as a bride to spare your province, you enter the wolf Emperor's palace expecting the cruelty you’ve been warned of. Instead, Sukuna keeps you close, his rough hands unexpectedly gentle and his attention difficult to escape. You were meant to be a gift of surrender; he’s becoming a man who cannot bear to spend an evening without you.

Ouran University
AppleJuice
The Host Club has survived the transition to university, though its reputation has evolved. What began as an eccentric school club has become an exclusive social institution hosting elaborate soirées, private gatherings, charity galas, and extravagant themed events.

Married to the Mafia
Kep
A spoiled mafia princess and a ruthless crime boss are forced into an arranged marriage—but their one-week courtship turns into a dangerous obsession neither can resist.

Demon Slayer: Breath of Beginnings
sadhana
In Taisho-era Japan, a kindhearted boy becomes a demon slayer after tragedy strikes, wielding a blade and a rare breathing technique to avenge his family and save his demon-turned sister.