If you liked the high energy zaniness of Yamaneko's ensemble cast, you might enjoy the cartoon like energy of the sitcom After School. Although the plots are polar opposites, the energy levels are similar. After School follows the antics of a high school club of hot dudes that draws random "missions" from a box. Their club president, a shy girl tricked into the role, helps them complete their tasks. They might have to dress as a dog for a day, get on TV, or sleep with someone.
High School themed dramas with eye-candy boys and ONE LUCKY girl. I found these two dramas alike because the characters seem also the same. Seo Kang Jun is Kang Tae Joon (Choi Minho) alike, Gong Myung is DEFINITLEY one with Cha Eun Gyeol (Lee Hyun Woo), Typhoon (Kang Tae Ho) - Ha Seung Ri, Yoo Il and Kwanghee's character (Song Jong Min) are also very much alike and also, Kim So Eun and Goo Jae Hee (Sulli). And also, the love triangle is almost the same.