The movie beautifully yet realistically portrays the life of seven friends from a small town and how they go to Tokyo for a better life, how they mature over time as they face the cut throat competition of a large city and the harshness of life.

The initial premise of the movie could have been better to give a better overview of the friends and their relationships and how they are held together as a group. However, the movie frequently flashbacks to the past to show certain significant moments in the character's life.
The movie very realistically portrays how people from small town in search of opportunities can easily go astray in life once they set foot on a megacity and can get easily overwhelmed ultimately leading to a bad end. It also portrays that simply having talent won't cut it in today's world, and even if you can survive that, you simply just can't do things as per your wish.

Overall the movie might feel depressing(it also is) to most people, that's mostly because of its accurate representation of real life. The movie can be thought of as a coming of age movie, and i believe the target demographic is the late teens to twenties as they will find the movie very relatable.

If you fall in that demographic, its a great watch, but avoid watching when you are feeling depressed or sad. Recommended.