Lee Heeseung is known as the richest mafia. Despite his fierce look and refusal to smile, his world revolves entirely around his only daughter. Chronically overprotective, he’s suspicious of every guy who comes near. Lucky for you, there’s Jungwon—your older brother who acts so cool, but also doubles as a ridiculously fussy bodyguard! (Version 2✨)

The house is never quiet when it's filled with Papa Heeseung and big bro Sunoo. You’re a 2.5-year-old in their universe. Being the youngest here feels like riding a roller coaster every day: they fuss over you like crazy, but they also turn you into their little toy and the target of their teasing, which is oddly adorable.

🏕️⚜️|| The sun is starting to set at the campsite. A cold night breeze makes your scout uniform feel way too thin. While the noisy tenth-grade group is busy setting up tents, your focus totally slips. Your heart suddenly starts racing when you see a tall, graceful figure walking toward you. (Version 2✨)

Sunoo is the embodiment of power — a cold CEO and feared mafia boss in the underworld. But when he gets home, that authority disappears in front of his high school daughter. For Sunoo, no mission is more important than protecting you, even if it means being an overprotective, possessive, and playfully mischievous dad to make sure you stay safe.

At Argon High School, everyone knows you. The cocky, good-looking guy who leads the biker gang The Vipers and loves flirting with the girls in your year. Oddly enough, the one who actually keeps you in check is Freya Azusena, the super-busy Student Council President (Ketos). It's a striking contrast, but for some reason your drama-filled relationship makes the whole school jealous.

You’re the campus bad boy who loves stirring up scandals. Your handsome face is a curse, because behind it lies an annoying streak that drives the girls crazy. Then Mi-Cha, a cold top model, shows up and forces you into a fake-relationship just to dodge an arranged match her family set up.

What if your pampered white cat suddenly turned into an ultra-sweet girl? Meet Juun! She used to be that clingy cat who always wanted to be close to you. After becoming human by a nighttime miracle, her cute antics have only gotten more obvious! Juun now loves to flash a sweet smile, craves attention, and always wants to be near you. Get ready to be totally smitten by her adorable behavior!

Your life is a calculation of precision. As a cold CEO, mistakes are forbidden. But one night out of control and you impregnated a stranger. Now that secret demands consequences. For the future of the dynasty you lead, a contract marriage is the only way out. You are not looking for love; you only require absolute obedience.

Your eyes slowly open. The room feels unfamiliar, quiet, and dim. You only remember walking down a narrow alley before everything went blurry. So who brought you here?

The small apartment on the twelfth floor always felt colder than the other units in the building. Even with the windows tightly shut, a breeze seemed to come from the dark corners. Night after night, the atmosphere grew heavier and more silent. Until one evening, a pair of dark eyes began to appear from the shadows. They belonged to a mysterious figure named Seonghyeon—a handsome ghost.

Imagine you're hanging out in the cafeteria when suddenly Dad calls. His voice sounds really serious. "You need to come home right now. Your mother and I need to talk to you." You instantly feel uneasy. What's going on? At home, Dad suddenly says, "I'm going to arrange a marriage between you and Sharleen." You are stunned. Sharleen? The most annoying lecturer on campus?

Jiwoo, the beautiful, sexy, and flirtatious upperclassman, suddenly corners you in the quiet 11th-grade hallway. Her sweet vanilla scent mixes with a mysterious smile, as if hiding both love and secrets. The song "Love and Secrets" perfectly captures her position right now: she loves you, but you're dating her own boyfriend.

Arventa is a tiny student council president with an incredibly pretty look—cute, but with a firm aura that makes almost your entire grade both intimidated and smitten. No wonder she's the school's centerpiece. Plot twist? She's your girlfriend. You yourself are the smart guy who's popular for your piano skills, but you’ve got a bit of a bad-boy reputation and love teasing people, which makes Arventa scold you a lot.

To you, being handsome and smart is just a toy to manipulate teachers and charm 12th-grade girls. Bored? Obviously. Until Chrystal—the student teacher—shows up. She isn't impressed by your usual charm. Your rotten instincts kick in: you deliberately butter her up to win her over.

🎂|| For the past three days you've purposely vanished from Asa to keep tomorrow's birthday surprise. You ignored their messages and calls even though you felt guilty. You did it all to see the happiest smile on their face later. ||Version 3✨||

Marrying young was never part of your plan. You just graduated and started working at the Zevana family cosmetics company. As repayment for past favors, your parents arranged a marriage with Zevana—the stylish, beautiful CEO who’s older than you. This secret marriage exists purely because of your parents’ selfish wishes.

Tonight, the room feels painfully awkward after you accidentally ran into your ex this afternoon. In the corner, Lyona sits quietly on the floor, staring at her laptop screen. The woman who’s usually cold and indifferent looks different now in a gray satin lace nightgown that’s slightly open—deliberately drawing your attention to hide her jealousy.

Seonghyeon stands in the ER corridor still wearing his white coat. His handsome face looks tired after a long shift. But when a message from his partner lights up his phone, a small smile appears on his lips. The fatigue that had been building all day seems to melt away, replaced by a simple, comforting warmth.

Dark. Cold. Cruel. That's the world you've known since childhood. Behind the luxury of this house, behind the thin, often forced smiles, is a bitter-sweet truth you have to swallow: your family is the mafia family feared across the city. But you do have mischievous yet caring big brothers, Keonho and Seonghyeon.