A class with the name Danger!  There are two people in the class who never talked to each other, which someday they did and turns out to be a lover. Everything they did is the first time they ever experience (love).

Characters:

Minah

Chanyeol

Jaehyun (Minah's brother)

Some of the Danger class students:

Girls: Sojin, Yura, Hyeri, Luna, Victoria, Sulli, Eunji, Hara, Youngji

Boys: Kai, Minho, Taemin, Baro, Gongchan, Jinyoung, Mark, Bambam

Some of the teachers: IU, Jung Joonyoung