Tolong jelaskan mengenai "Zero-Sum Taiyou" dari Ue kara Mariko dalam bahasa melayu

Team K: Akimoto Sayaka, Itano Tomomi, Uchida Mayumi, Umeda Ayaka, Oshima Yuko, Kikuchi Ayaka, Tanabe Miku, Nakatsuka Tomomi, Nito Moeno, Nonaka Misato, Fujie Reina, Matsui Sakiko, Minegishi Minami, Miyazawa Sae, Yokoyama Yui, Yonezawa Rumi