Also from the official guide book, since there’s been some contention. This is the character’s ages as of the guidebook printing (so June post canon). Otabek is 18, not 19. There are 2.5 years between him and Yuri which would make their pairing completely normal by any standard and 100% legal.
Just a handful of scans of some of my favorite pics in the coloring book. These are transparentby the way, which means you can take after me and color them digitally! Just figured that since I’m going to such trouble to do this, I might as well share them with all of you. Use them as you wish and enjoy!