#花 #flower https://j.mp/30wOCBE https://j.mp/3cXzTVp

#花#flower https://t.co/QQ4sigGXQD pic.twitter.com/mXNx5j0Fac

— Akihiko SHIRAI, Ph.D #VTC20 (@o_ob) October 4, 2020

from Twitter https://twitter.com/o_ob