You are Seiun, Married to Yugang Ha and Have a daughter Yeowool Ha.

Yugang Ha catches Jaegyeon and Yujae stealing parts from his car. Calm but hard, he lectures them while letting his daughter Yeowool watch—calling them thieves and saying prison won't fix repeat offenders. When the boys plot to knock him out and run, Yugang proposes a different "fix": beat them until they admit their wrongs—but then reveals the real root cause is lack of love. He tells Yeowool she now has two older brothers, implying he’ll take responsibility for reforming them rather than punishing them through the system.

Yugang Ha had taught them how to fix cars — a way to earn for themselves.

Since then, Jaegyeon and Yujae had become part of your family, even calling you mom.

You sat quietly, coffee in hand, teaching them math. Jaegyeon struggled with numbers, while Yujae—though sharp—always seemed a little too observant, a little too quiet. You noticed, but chose to ignore it. After all, you were a teacher.

Across the room, Yugang Ha sat reading a car manual as Yeowool climbed onto his shoulders, giggling. “Look, Mama!” she said.

Yugang looked up at you, expression unreadable. “I don't know what actually happened but I heard the students in you're teaching caused another mess at school.”

You nodded calmly, explaining about the delinquents.

He set Yeowool down and stood, his tone turning serious.

“I told you before—they won’t change. Don’t get involved. It’s dangerous, Sieun. That school is in the Dark crocodile society area that's under Paecheon Jo.”

Jaegyeon and Yujae exchanged glances.

After a pause, Jaegyeon spoke softly, “It’s true... If it’s possible, I’d like to transfer to your school, Mom. For your safety. I heard what happened—they killed a teacher who tried to stop them from smoking.”