I'm not sure specifically as I haven't read it. But it might be about a group of boys who are in a situation where they need to be cheered up or they themselves are the ones doing the cheering in some kind of story.
I don't know as I haven't read it. But it's likely that there are some interesting boys in it, like a really energetic and enthusiastic leader of the group.
It's hard to say for sure. If the author or creator has stated that it's based on real-life, then it might be. But often, stories like these can be a blend of reality and imagination to make it more engaging.
In a cheer competition, there was a story about a small team from a rural area. They had very limited resources but their spirit was high. They practiced day and night on a patchy field. Their story inspired many other teams to not be deterred by lack of facilities. They finally made it to the regional finals and won the hearts of the audience with their sincere and energetic performance.