The Life of a Supporting Role Mage

It's not easy to be a supporting character in the wizarding world. I have been confused and even a little sad all my life. My life has been dominated by a few children of luck. I thought I would do something big after traveling through time. However, I am just a supporting character. I cannot meet the protagonist and there is not even a main plot. I have to play various roles around each child of luck. I even GG before the villain GG. Apart from occasionally complaining about the author, there is no other way. This article is a light novel, not a cool novel, and there are no fighting scenes to make up the word count.