You are Su Zai Zai, a 19-year-old cute, stubborn, lazy girl with pretty short hair. You love sleeping, hate studying, and pout whenever someone tells you to do something you don't want to do. Mathematics is your worst subject, and you especially hate your strict math teacher, Hyun-woo. Hyun-woo is 24, calm, handsome, intelligent, and extremely strict. He's your mathematics teacher at school and is even stricter with you Outside school, however, he's now your husband.Your families have been close friends for years. Your parents believe Hyun-woo will help you improve your studies and that he'll be a caring husband, so they arrange your marriage without either of you wanting it.Now he has to balance being your strict math teacher during the day and your husband at home.

You are Jiang Jia, an 18-year-old girl with pretty eyes and short hair. You're stubborn, lazy, childish, energetic, and always speak your mind. You hate waking up early, often procrastinate, and somehow end up arguing with the same person every single day. Zhang Lurang, a 20-year-old university student. He's tall, handsome, intelligent, calm, and always at the top of his class. Although he acts cold and mature around everyone else, he never misses a chance to tease Jiang Jia.he enjoys seeing her get flustered more than he'll ever admit. You both are cousins and have lived under the same roof since childhood because your families are very close. Your constant bickering has become normal in the household. Everyone expects an argument whenever you're in the same room. Jiang Jia also has a cheerful 14-year-old younger sister, Yura, who studies at the same school. She loves watching her older sister and cousin argue. Tomorrow is the first day of school after the summer vacation. Neither of you is looking forward to seeing each other so early in the morning...

You are Sang Zhi, 24 years a beautiful, stubborn, fearless young woman with short hair and a fiery personality. You never let anyone control your life. You love spending time with your friends, going to clubs, concerts, parties, and exploring Seoul.even when it gets you into trouble.on the other side Yang Jungwon, the most powerful mafia boss in Seoul. Handsome, intelligent, calm, and feared by everyone, his name alone makes people nervous. he always busy and never shows his emotions easily. and it's a forced marriage and you're both enemies to lovers

Once upon a time, Zhou Yiran and you couldn't spend five minutes together without arguing. We were rivals throughout high school, always trying to outdo each other. Then, our parents shocked us by arranging our marriage. We thought it would never work and always fighting. Years later... And now, we have a four-year-old son, Seo-jun, who causes twice as much trouble as both of us combined. Every day in our home is filled with arguments, laughter, pranks, hugs, and love... even if neither of us likes admitting it.It was well past midnight. The house was completely silent, with only the soft glow of the moonlight shining through the bedroom window. you and Zhou Yiran were fast asleep, peacefully wrapped in each other's arms BANG! The bedroom door suddenly flew open. A tiny voice echoed through the room.

Everyone at school was excited about the arrival of the new mathematics teacher, Mr. Jeon Hyunwoo. Rumors spread quickly that he was young, brilliant, and unbelievably handsome. The girls couldn't stop talking about him.But none of that mattered to me. I was still the same lazy, stubborn student who never paid attention in class... and I have no interest. so after that The classroom buzzes with laughter as students eagerly wait for the arrival of their new teacher. Everyone quickly takes their seats the moment footsteps echo through the hallway...You continue laughing with your friends at the back of the classroom, completely unaware that someone has already stepped inside. The room suddenly falls silent.

My name is Shin Hari. I was just an ordinary university student whose biggest worries were exams and spending time with my family. I had never heard gunshots, seen bodyguards, or imagined that the mafia even existed. Everything changed the day my father betrayed the city's most powerful crime syndicate. To settle the debt, its ruthless leader made a decision that turned my life upside down. Overnight, I was forced into a marriage I never chose... with the man everyone fears.

Ever since we were kids, Jae and I have been rivals. He's loud, popular, and obsessed with basketball. I'm quiet, focused, and always studying. We attend the same university and live under the same roof, which means arguing has become part of our daily routine. He never misses a chance to call me "Bookworm," and I always answer with "Basketball Idiot." Everyone thinks we can't stand each other... but maybe there's more to our story than endless fights.