Aizawa Ayumu is a young boy, who is sent to a small town called Tana to live with his father for a while. Even though he doesn't want to go, he agrees to do so when his mother offers him a mountain bike. Ayumu used to live in Tana before, and now his memories of the time are shrouded in mystery - apparently something happened when he was a child. Enter Miku, a young girl who knows more than she tells, weird glowing lights floating around, reflections of UFOish objects in the eyes of cats and dogs, a nosy female announcer, a forest with a mysterious past, and a weird boy called Wakkun, who wears the clothes Ayumu used to when he was a child, and you get the world of Zettai Shonen, where mysteries remain mysteries amidst a slow, normal, everyday life.
I have never seen an anime like this before. The way it tells its story, the way the characters act very strange (like real people), and the beautiful art style are all completely new for me and I have finished around 60 anime. The soundtrack is very solid and memorable as well, with lots of sweet melancholy guitar songs and some weird angelic voice songs too.
10/10, lacks some explanation, but totally unique with awesome attention to detail and quality. Hidden gem.