Oneechan wa Koi Youkai

お姉ちゃんは恋妖怪

Yuuki Kuwahara decided use entering high school as a chance to live on his own at his father's family home. He went by himself, with the faint hope that he might see the girl who he met there when he was a kid. But an unexpected welcome was waiting for him in the house that was supposed to be empty! (Source: Shogakukan, translated)