DORR-001 Angry with her boyfriend, her sister went to look for her brother and the ending

Kanoko is a younger sister who loves her older brother. In reality, she is a taciturn and lustful girl who acts as a backstage girl. Hit my brother with the aura of love and seduce him quietly. The brother couldn't bear it and attacked his sister even though they were family. Furthermore, what came out of my sister's mouth, who had such a cute anime voice, was an unimaginably silly voice. The two had crossed the limit and couldn't hold back anymore. They looked for each other all day while their parents were away.