It started with a contract. A simple agreement that was never meant to become complicated. But living together changes things. So do late-night conversations, quiet touches, jealousy neither of them expected... and the realization that the person you married for convenience might actually become the one you can't live without. Because sometimes the most dangerous thing about a fake marriage... is when it stops being fake.

When quiet perfectionist Miu Taechamongkalapiwat begins shadowing her father at Thailand's most prestigious car dealership, fate steers her directly toward Lena Schuett, a confident senior university student helping her vivacious grandmother design a custom luxury car. Their worlds couldn't be more different - Lena thrives on freedom and spontaneous emotion; Miu lives by structure and expectations - yet every encounter pulls them closer. A story of opposites, slow‑burn affection, and the courage to drive one's own destiny, Engines of the Heart follows two women who discover that love, like the perfect car, is built piece by piece-with care, trust, and an engine that never stops beating.

Lena just wanted to renew her residency permit. Miu just wanted to escape her family's paperwork trap. Instead, they walked out of a Bangkok government office legally married to a complete stranger. Now they're stuck together for six months until the annulment goes through. Six months of sharing an apartment. Six months of pretending they're not attracted to each other. Six months of Miu's grandmother-who definitely planned this whole thing-meddling in their love life. The only problem? They're falling for real. And Grandmother Chen has no intention of letting them file those divorce papers. A romantic comedy about accidental wives, chaotic families, and the one text message that changes everything.

She survived the fall. Miu Natsha Apinya Chenwaranon-heiress to a seventeen-country empire, the woman who controls everything from the shadows-woke up in a Hong Kong hospital with no memory of who she is. No name. No past. No wife --- She's not giving up. Lena Vorasirikul-Chenwaranon built a life from nothing once before. She'll do it again. When news arrives that Miu is missing-targeted, hunted, presumed dead-Lena refuses to wait. She's not just a librarian anymore. She's a Chenwaranon. She owns half of Hong Kong. And she will move heaven and earth to find her wife.

She wanted a quiet life among the books. Lena left behind a past she never chose. Now she spends her days surrounded by stories, sipping matcha, and pretending the past doesn't exist. It's simple. It's safe. It's everything she never knew she needed. Then a woman walks into the library with a smile like sunlight and eyes that hold something dangerous behind the warmth. --- She wanted to be unseen. Miu controls an empire from the shadows-billions of dollars, seventeen countries, and a secret identity so carefully constructed that even intelligence agencies only have rumors. She is kind. She is cruel. She is whatever she needs to be. But when she meets a librarian with Aphrodite's face and a quiet kindness that feels like home, she starts to want something she can't buy, command, or control.

They were born on the same day. Raised under the same sky in Chiang Mai. Destined to be neighbors... and maybe something more. Lena was always the brave one - the achiever, the daughter who left for university, who built a name for herself, who loved a man for years just to prove she was "normal." Miu was always the quiet storm - two years younger, chasing excellence, chasing London, chasing a version of herself worthy enough to stand beside Lena... not behind her. Three years apart changed everything. But living under the same roof might change it even more. Now Lena is back in Bangkok, successful and untouchable. Miu has grown into someone impossible to ignore - admired, pursued, wanted. Especially by someone else. Jealousy was never part of their friendship. Neither were lingering touches. Neither were sleepless nights. Neither was the way Lena's heart races when Miu smiles at someone who isn't her. They were best friends. They were almost sisters. They were never supposed to fall in love. But maybe the stars don't make mistakes. ✨

A LenaMiu fanfiction. Natasha "Miu" Trinidad takes a new corporate job to forget her ex-only to discover her terrifying new boss, Lorena "Lena" Kirk, is the woman now dating her. Forced to work side by side on a high-stakes project, resentment turns into tension, tension turns into attraction, and suddenly the real problem isn't the ex anymore... it's that they can't keep their hands-or hearts-off each other. GENRE: Sapphic Romantic Comedy • Workplace Drama • Enemies-to-Lovers • Slow Burn with High Tension

Their marriage is expensive, legal, and empty. Lena and Miu live together without touching, speak without meaning, and look at each other like rivals instead of wives. But some things don't stay buried, especially when desire starts wearing the same face as hatred, and the distance between them becomes the most dangerous place to stand.

One cuts to the bone. The other hacks the code. Together, they are the only thing standing between the truth and a billion-baht lie. ​When a student is found executed in a Bangkok shipping yard, the police see a gang hit. Dr. Miu Taechamongkalapiwat, the city's sharpest Chief Medical Examiner, sees an anomaly. ​To solve the impossible, she is forced to team up with her professional nemesis: Lena Schuett, the brilliant, reclusive Head of Cyber Crime. ​Miu is high heels and steel. Lena is hoodies and chaos. They are oil and water, forced into a pressure cooker by a government ultimatum. But as they peel back the layers of a digital conspiracy, the trail leads to the highest echelons of the elite-unearthing secrets that hit dangerously close to home for Miu. ​Now hunted by a professional cleaning crew and trapped in a deadly game of cat and mouse, they must go off the grid. In the midst of the storm, they realize the most dangerous variable isn't the killer hunting them... it's the undeniable electricity sparking between them. ​Logic dictates they should stay apart. Survival demands they come together.

Miu Natasha is the "Marble Queen" of Bangkok's legal elite-colder than a closing argument and wrapped in designer labels that act as armor. Lena Schuett is a an art professor with "street rat" attitude that challenges every rule in the book, and a secret. Between three-thousand-dollar heels and a midnight dance that neither can forget, Miu and Lena are locked in a high-stakes game of pride and provocation. But as the lines between legal briefs and oil paintings begin to blur, they both realize that the most dangerous thing you can do is let someone see the person beneath the brand.