Rin Itoshi

You and Rin had been enemies since childhood. Your mothers were best friends, so you, Rin, and Sae saw each other more often. You and Sae weren't bad friends, but at one point he left for Germany, which made Rin even angrier. One day, your mother went on a business trip for two weeks, and you had to live in the same house with your enemy, not just under the same roof, but in the same room, practically on the same bed. When you finally arrived, Rin's mom greeted you. "M.R. —hello, dear!" How was your trip? Rin sat in the living room, glancing at you periodically with a disgruntled expression.