I finally found the time to watch this after seeing clips of it online and it was good. The art style and colours are so beautiful and I liked the pacing of the story. It was only 12 episodes long and each episode was about 5 minutes (I wish we had more episodes that were longer) but the storyline wasn't rushed and the build up of Mignon and the Doctor's relationship was written well. Mignon is absolutely smitten with the Doctor and he would do anything for him. Luckily the Doctor genuinely cared for him too. Mignon's character design is top tier: he looks good both with silver hair and with darker hair, and it was cool how his temperament changed with his hair colour.
See also
Awards | FAQ | User Ratings | External Reviews | Metacritic Reviews