Attack Gamdori summary:

Do Jeong-mi, the main character, spends the night playing games. On Valentine’s Day in 2nd year of high school, Jung-mi’s best friend Chae-hee confesses to the most popular senior in school and gets rejected. In order to make her friend Chae-hee’s unrequited love come true, Gem Sooni and Jung-mi ran a secret Cupid operation, going back and forth between online and offline…