Kusanagi-ke Toushu wa Hatsuhana wo Mederu

When she was a child, Otoha ran away from her abusive home and hid in a Western-style mansion. Daria, the man who lived there, took her in. Now 20-years old, Otoha had made up her mind to confess her feelings to Daria, her handsome and mysterious guardian. (Source: Mecha Comic, translated)