Kazutaka Tachibana

President Tachibana's oldest son and owner of Kagetsutei. He has a father complex. [Spoiler] Once he found out Miyagi is his father's illegitimate son, he sent Kasuga to "Tachibana" in hope to make Miyagi resign. [/Spoiler] (Source: En wa Ki na Mono Aji na Mono, chapter 5.5)