What is a rainbow

When I see it when it's been raining, I feel relieved that it will stop raining soon.

When I look at it when I'm worried, it seems that I'll be able to do something about it, and I have hope.

Isn't it okay if I don't get so angry when I see it when I'm angry? It seems that you are being asked, and I am surprised.

When I'm sad, it seems like he's snuggling up to me.

When something happy happens,Yay! It was good! It seems to be pleased.

・・・That's how it felt. It's just that.

Who is the rainbow?