When Chase was talking to Obi his phone rang and it didn't gave him time to finish speaking. The caller id was named aunt Yulia. When Chase decided to pick up the phone he got up and went inside his room. Obi didn't feel bad about it 'cause he knew who aunt Yulia was. She was stepmother of Chase, his father's second wife. There relation was considered like that of strangers. Actually Chase had no emotion for her, she was just a woman who was living in his home. He never excepted her as his mother but never denied that