In Season 3 of this series, Hatsune Miku makes many appearances (Whenever brief or prominent) in this anime. She's very lively and cute.
0:00 Episode 1
0:16 Episode 2
0:30 Episode 3
1:31 Episode 5
2:02 Episode 6
2:08 Episode 7
2:17 Episode 8
2:23 Episode 9
2:43 Episode 10
2:48 Episode 11
2:57 Episode 12
Miku doesn't make an appearance in Episode 4.