Because it's an affinity point.
Why do I have to carry a cat on my head to become her friend!?
You are mean!
That's harsh!!
To me... are you saying to become friends with that girl?
Hey Amano, wouldn't you like to become Makoto's friend?
I beg you!!
Speaking of Makoto's peculiarity...
I need a friend for Makoto.
Speaking of friends, "birds of a feather flock together"!!
A cat on the head!!
A cat on the head is the decisive affinity point!!
Turn it back...
My mechanical pencil...
A cat on the head
Similar friends
As her friend
...I wonder if it can become friends with her...