This is an MCU shot. I feel like the director chose this shot because he wanted to the show the individuality and loneliness the boy is feeling in this scene. It highlights the boys facial expression. It also shows the character as an equal to the audience as we are at eye level with him.

This is a high shot angle from the part where he is play fighting with his childhood friend. The shot makes the audience look down on the character.

This is a Mid shot where the aim of it is to make the viewer thing they are listening from afar. The effect from this shot is to make the viewer thing they are spying on the couple by being so far away indoors.