Tolong jelaskan mengenai "Watashitachi no Reason" dari Eien Pressure

Tim A: Rina Izuta, Anna Iriyama, Karen Iwata, Ryoka Oshima, Tomomi Kasai, Ayaka Kikuchi, Marina Kobayashi, Sumire Sato, Natsuki Sato, Juri Takahashi, Yuuka Tano, Tomomi Nakatsuka, Shiori Nakamata, Sakiko Matsui, Ayaka Morikawa

Tim K: Sayaka Akimoto, Asuka Kuramochi, Kana Kobayashi, Amina Sato, Haruka Shimada, Shihori Suzuki, Rina Chikano, Sayaka Nakaya, Mariya Nagao, Nana Fujita, Yuka Masuda, Miho Miyazaki, Tomu Mutou

Tim B: Haruka Ishida, Miori Ichikawa, Misaki Iwasa, Mina Oba, Shizuka Oya, Haruka Katayama, Rena Kato, Natsuki Kojima, Mika Komori, Miku Tanabe, Wakana Natori, Misato Nonaka, Reina Fujie, Suzuran Yamauchi

Siswi pelatihan: Moe Aigasa, Saho Iwatate, Natsuki Uchiyama, Ayano Umeta, Miyuu Omori, Ayaka Okada, Nana Okada, Saki Kitazawa, Mako Kojima, Yukari Sasaki, Yurina Takashima, Miki Nishino, Hikari Hashimoto, Rina Hirata, Mitsuki Maeda, Yuiri Murayama, Shinobu Mogi

SKE48 Tim S/AKB48 Tim K: Jurina Matsui

NMB48 Tim N/AKB48 Tim B: Miyuki Watanabe

HKT48 Tim H: Aika Ota