First, I just wanted to draw the two sweethearts under the mistletoe but it felt so empty so I sketched the other ones, too. It didnt feel empty any longer, but it took attention away from the subtle couple in the middle. So I decided to use my multicolored pencils to add some color to the secondary characters and I like it~
Serina is the mother of Ana and Keigo, the three who are hinted with color, Sasuke, the blue-haired one is the youngest step-brother and Tsubame is a friend of Ana, a neighbour and a bit of an airhead.