Based on manga series "Ousama ni Sasagu Kusuriyubi" by Shiho Watanabe (published June 7, 2014 - November 8, 2017 in magazine Petit Comic).
"Kissing the Ring Finger" takes over TBS' Tuesday 22:00 time slot previously occupied by "Hold My Hand at Twilight" and followed by "18/40: Unbreakable Bond of Dreams" on July 11, 2023.