Fridge / Oversoul

• When Kali gets her first period, she goes to Anna for napkins. She says she doesn’t have any. It would be odd for a girl to come to a foreign place unprepared for their monthly visitor. So why doesn't she have any napkins? Because she's pregnant.
• It’s mentioned in an early chapter that Kali’s eyes are similar to Hao’s and Yoh’s in shape but not in color. First and probably only hint that she’s not their blood sibling.
• Fridge Horror: Hao most probably rapes Kali, who is only fourteen/fifteen years old, to make her "stronger".