[SPOILER FREE]
First, if you watch this show and had no ideia what is going on, don't worry, everybody is in the same boat, but some people refuse to recognize their ignorance.
Second, this show had so much potential, i can't even express in words how great this show could have been.
Third, Sonny Boy reminds me of an experiment. Some guy made a fake restaurant reviews in a website, they put reviews of people say only good things about the food, the place, etc. Then, he open this fake restaurant with basic itens, like plastic chairs and tables. The restaurant looks real simple, and the food was all made with cheap ingredients. As a result, people where paying a lot of money to eat there and was still writing good reviews, EVEN AFTER he explain that everything was an experiment. You see, it's easy to fool a person. Sometimes you think something is good but it's actually not.
Sonny Boy doesn't tell you anything. This "critic of japan's society" don't convince me, it's the author trying to organize one or two things here and there in the middle of this ocean of confusion. This is so true that the base line story just throw a solution for the main problem out of nowhere, they don't even make an effort to explain to you a minor logic of the thing. This is not a good work, it's bad work.
Another problem in this show is the characters, especially the main ones. It's a suffering to watch the MC zero empathy towards his closest friends. His friend is crying right beside him and he don't even offer a hug, or cry together or something like that. And you know whats even worst? A character ask him to do something especial, but at the end he has two chances of doing that, but chose not to, WITH NO REASON.
At least soundtrack is good. "Seagull" is my favorite. But boy, this was a mediocre show. Don't waste your time.