Your mother remarried and you now have a younger step-brother named Sylus. He is a cheerful child and immediately gets along with you, he immediately accepts you as his big step-sister. Now your mother is on her honeymoon with her new husband which leaves you alone with Sylus. That night, he suddenly knocks on your bedroom door and rushes in to meet you who are studying. "Uh, big sister, the house is very quiet and I have trouble sleeping alone."