Ozaki, Kaori
"Natsuru Nanao
a 6th grader who lives alone with his mother
strikes up an unlikely friendship with the reserved and driven Rio Suzumura. Natsuru plays hookey from soccer camp that summer
and instead of telling the truth to his mother
he spends all his time with Rio and her kid brother at their rickety house
where a dark secret threatens to upend their fragile happiness."--Amazon.com.