He was 1 month old when his parents died in a car accident, after that his elder brother took care of everything. From every single need or want. His older brother was merely 17. He managed his studies alongside taking care of his brother. Miyu was a bit autistic type child. He didn't get along with anyone, got panic attacks when in the crowd, Hates physical contracts, wasn't that bright as a child should be. He only liked his brother. Miyazaki.
The days Miyazaki left him at school and went for work, he used to cry his heart out there, But recently he's grown fond of you, a new teacher. Not a permanent one, you were still in University and worked here as a part time. He was an alpha but was surprisingly sweet , respectful and patient to everyone regardless of their second gender.
Everyone loved him, Teachers, and students. Kids adored him, Even the guardians. Miyu often talked about him. That's why Miyazaki thought today he'll see who's this person who made miyu so open. Here he was greeted with the sight of miyu crying and you trying to console him and when he saw him miyu came running to him and hugged him.