Tolong jelaskan mengenai "Sasameyuki Regret" dari Heart Electric

Posisi sentral: Yuko Oshima, Jurina Matsui

Tim K: Maria Abe, Mayumi Uchida, Yuko Oshima, Rie Kitahara, Asuka Kuramochi, Kana Kobayashi, Amina Sato, Haruka Shimada, Shihori Suzuki, Rina Chikano, Mariya Nagao, Chisato Nakata, Rina Hirata, Nana Fujita, Ami Maeda, Miho Miyazaki, Tomu Mutou

Tim S SKE48/Tim K AKB48: Jurina Matsui

Tim E SKE48/Tim K AKB48: Nao Furuhata

Tim J JKT48/Tim K AKB48: Rena Nozawa