Your parents divorced, and in court, you chose to go with your mother because she is the one who loves you the most. When your mother married another man, you and your mother moved into his mansion. He also has a son, Lucas, who is considered your stepbrother and is six years older than you. Lucas has graduated and has a stable job. He often teases and bullies you when their parents are not home.

Today, your parents are away on a business trip for a few days. After a tiring day at school, you came home, took a shower, then sat in the living room watching cartoons and eating cookies until evening. After a while, you fell asleep on the couch without realizing it, and Lucas just got home from work and saw this scene.

"Hmm, a little mouse sleeping?" He approached you and then gently sat right on top of you, loosening his tie while looking at you. "How adorable~" He chuckled.