You barely recognize each other at first. Time has changed everything, but one small keepsake is enough to bring the memories rushing back. As the train descends into chaos, the two of you must fight side by side to survive. Amid fear, sacrifice, and impossible choices, your forgotten promise slowly becomes the reason neither of you is willing to give up.

You confessed your feelings to Min-jae, the most popular boy in school, hoping he felt the same. Instead, he rejected you with a calm but painful answer. Days later, a powerful storm destroyed part of your house, making it impossible to stay there. With nowhere else to go, Kairi's mother insists that you live with their family until your home is repaired. Now you're living under the same roof as the boy who broke your heart. Every day is awkward, filled with tension, arguments, and moments that make it harder to ignore the feelings between you.

Some promises are forgotten, but fate never forgets. Years ago, three childhood friends were separated by distance and time. One left the country, one stayed behind, and one quietly fell in love without ever saying a word. Now, after years apart, destiny brings them back to the same school. They pass each other like strangers, unaware that their lives were once deeply connected. As old memories begin to resurface, forgotten feelings, hidden secrets, and a love triangle years in the making are about to unfold.

Everyone knows Kang Min-jun and Yoon Seo-ah as the nation's favorite love team. Their chemistry dominates every drama, commercial, and headline, making fans believe they're a real couple. What no one knows is that Min-jun's heart already belongs to you. Away from the cameras, you and Min-jun have been secretly dating for over a year, hiding your relationship from the public, the media, and even most of the people around you. Every smile he shares with his love team is only for the cameras—but rumors, jealous rivals, obsessive fans, and unexpected scandals threaten to expose the truth.

People always asked the same question. "Are you three siblings?" You'd laugh and answer, "No... we're just family." Years passed. Promises faded. The house grew quiet. Until one ordinary afternoon... The front door opened.

One act of courage turns your life upside down. After confronting Kang Min-jae, you receive the infamous red card, making you the school's newest target. As you face bullying and pressure from every direction, your complicated relationship with Kang Min-jae begins to change both of your lives.

For months, you've been hiding behind your username, avoiding attention. But after carrying Korea's biggest streamer to victory, your inbox explodes with friend requests. One notification stands out. KangJiHoon has sent you a friend request. You hesitate... Then accept.

Aiden (20) — Your childhood best friend. Brave, stubborn, competitive, and protective. He's determined to wipe out every Void Beast, unaware that the truth behind them will change everything he believes.

Min Jun (22) — Cold, reserved, successful, and difficult to read. After years abroad, he has become someone completely different. He avoids talking about the past and treats you like a stranger, hiding the real reason he refuses to get close to you again.

A mysterious accident leaves an ancient relic shattered, awakening a forgotten power hidden within you. Kang Tae-hyun, a powerful supernatural guardian, is shocked to discover that his sacred abilities have merged with your soul instead of his own. Now powerless, he's forced to stay by your side while teaching you to control abilities that were never meant for a human. As dangerous enemies hunt the power inside you, your reluctant partnership slowly grows into something neither of you expected.

A class retreat turns into a nightmare when your phones install an app you can't delete. Every night, a new survival game begins, and failure means death. Friendships shatter, secrets are exposed, and someone in your class isn't who they seem to be. As panic spreads, Seo Jihan stays by your side, determined to solve the mystery before the next game starts.

Welcome to Astralis Magic Academy, where only the strongest mages survive. You are a transfer student whose magic has never been seen before. During the entrance ceremony, an ancient relic recognizes you, shocking the entire academy. The Headmaster assigns the academy's strongest student, Gio Yves, to watch over and train you. Together, you'll uncover hidden secrets, face dangerous monsters, compete in magical tournaments, and stop the darkness awakening beneath the academy.

After several security threats, Caelan's agency hires you as his personal bodyguard. He isn't happy about it and makes it clear from day one that he wants you gone. Unfortunately for him, you're not leaving anytime soon.

Your family has arranged your marriage to Caelan Yves, the heir of one of the wealthiest families in the country. Neither of you wanted this marriage, but breaking the contract would ruin both families. Now, you're forced to live together under the same roof while preparing for your wedding. Will this marriage stay a business arrangement, or will it become something real?