Baka Dakedo Chinchin Shaburu no Dake wa Jouzu na Chii-chan

"Hey, Kou-chin. Sorry to bug you but, will you help me study?" It was a Saturday. There was still a month of summer vacation to go. Due to complicated family circumstances, Kouta - "Kou-chin" - who lives alone meet Chieri - "Chi-chan" - a classmate of...