The Gods Lie by Kaori Ozaki.
I gave this book ★ ★ ★ ★ ☆ 4 stars, I liked it a lot.
Natsuru Nanao is a 6th grader who lives alone with his mom and just moved to a new town. His dad passed away when he was little and it is just the two of them. Natsuru is a good soccer player but he doesn't like his new coach. He skips his summer soccer camp without telling his mom and spends time with one of his classmates instead.
Her life is very different from his. She is very responsible. She does all of the housework and shopping for her household and takes care of her younger brother. Natsuru enjoys staying with them and fits into their family really well. There is a terrible secret in her house that could destroy everything, plus his mom doesn't know where he is and the soccer coach called her to ask about refunding the camp fee. Everything is about to come crashing down on them and reality has an ugly face.
I really enjoyed this book. The characters are multifaceted and endearing. The art is wonderful and really moves the story along. I highly recommend it. It is really bittersweet and moving. You should definitely check it out!