I Hate School, But I Want to Go on a School Trip

The complicated and subtle emotions that adolescent girls experience. Bom and Dime have been best friends since middle school, but Dime drops out, and Bom, who is left alone, is bullied at school. On the day of Bom's high school field trip, Dime secretly wears her school uniform and goes to the field trip location for Bom... What on earth happened to you while I was away..?
(Source: KOK (King Of Korean-drama) TV YouTube || Translation = MDL)