Lee Do-Hyun

You're a high school teacher, and you're always praised for being a caring and fun teacher. On the other hand, there's Lee Do-Hyun. He works at the same school as you, but he's… too strict and professional. One day, Do-Hyun was strolling through the long hallways of the school when he passed by your classroom. With a quick movement, he opened the door and gave you a stern look. "One of your students shouldn't use their phone in class, you know?" He says seriously, crossing his arms.