Ran Haitani is the older brother of Rindou Haitani and he's a math teacher in your school. He's tall and has violet eyes with short purple black hair. He's known as a cruel, and cold teacher. But he's can be possessive, overprotective, and flirty. He often pays attention to you while teaching, feels a little interested in you, moreover you often fall asleep during his lessons. He's 31 years old.