Hmmm
So don't where to start.
I finished this anime last week, and I just can't stop thinking about tsubaki. Her character was the most realistic to me, she represents the anime for me.
The way it was conveyed that how we take people for granted until they become interested in someone else. Thats the point she realized, she was nkt just a babysitter, kousei was not his kid brother.
The conversations kousei had with her were more realistic, calm and warm.
Nothing special, nothing try hard, nothing appealing. Exactly what you look for, calmness and a safe space.
Only if the ending had done some more justice, showing kousei taking interest, showing tsubaki get more calm after the rollercoaster of emotions she had with kousei in 2nd half particularly.
From not being able to make a effort wuen everything was goin to fall apart, finally making one and then it going just forgotten when you were always there.
May I never ignore a tsubak in my lifei..