Personally that's my favorite thing about this manga. It's just about life. Life doesn't have a main point, things just happen as they please with no straight direction or decided end game. There's always twists and turns that we can't predict that change the "genre" of our lives. You never know how things are going to end up being like, and I think this manga captures that really well.
I agree with Chōrea. The way I saw it, the story really focused on choices. There aren't wrong or right choices. You just kind of float along in life and see where it takes you.
But no matter how much I love this manga I can't stop but think what was the main point of this story. A story of highschool lives and people who aren't perfect? How Touma and Taichi got together? Same sex love? It doesn't give you a straight direction