Reply from the authors. Issue 12 (30th December 2020) - Kawaoka, Tomokazu; Ando, Yuwa; Yamauchi, Masami; Suehiro, Yosuke; Yamaoka, Kenji; Kosaka, Yumi; Fuji, Yasutomo; Uchikawa, Shinsuke; Morio, Kei; Fujino, Hatsue; Nakahara, Takashi; Ono, Atsushi; et al.