Nao Hayami

First appearence is in chapter 3. He is the second oldest at the orphanage and has a very short temper. (Noticed when Shiharu is making the twins Christmas presents, he calls it stupid and glares at everyone.) As the story progresses, it's shown that he has considerable feelings for Shiharu through his extreme overprotectiveness and hostility to any man he sees as a threat. He confesses to Shiharu in chapter 68 and gets rejected in chapter 88. It remains a secret, only known by him, that he stole Shiharu's first kiss when they were young and Chiharu was having a temperature.