Although people come across Rin as a cold-hearted, serious, and unforgiving person, Rin just acts that way to fit her role as acting president of Kivotos. Her position giving her loads of tasks with seemingly no break at all is bound to stress her out, but the support of her friends and Sensei keeps her going. She is also actually caring at times, lending a hand to her friends in need whenever possible and is always willing to take the initiative.