>>3285099>>3285101Doug's birthday in regards to love was about falling at first sight but are unable to confess because of their cautions personality, they constantly test their partner to check their feelings and feel "the ground", his type attracts young people. Kirill's birthday said that people born that day show their emotions clearly, tend to make implicit confessions, are attracted by older people and are adored by everyone. Kirill's birthday also mention people born that day are very lucky.
There's a lot of info based in the birthdates, including stones that could be the ones in Kirill's watch. Doug's stone is peridot, only found in green or yellow, and Kirill is color changing garnet, the color varies with the light, it goes from light blue to pink to purple. This is just me speculating of course.