Tolong jelaskan mengenai "How come?" dari Sayonara Crawl dalam bahasa melayu

Team K: Akimoto Sayaka, Abe Maria, Itano Tomomi, Uchida Mayumi, Oshima Yuko, Kitahara Rie, Kuramochi Asuka, Kobayashi Kana, Sato Amina, Shimada Haruka, Suzuki Shihori, Chikano Rina, Nakata Chisato, Nagao Mariya, Fujita Nana, Maeda Ami, Matsubara Natsumi, Miyazaki Miho, Mutou Tomu

Team S (SKE48) / Team K: Matsui Jurina