Kosuke Midorikawa

Kosuke Midorikawa (緑川 浩介, Midorikawa Kōsuke) is the son of Iwao Midorikawa and Sumiko Midorikawa and the younger brother of Maki Midorikawa.

Chronology
Kousuke visited Maki Midorikawa in Manoyama and he agreed to meet with her on Angelica's restaurant. In a short conversation between the two siblings, Maki told Kousuke about her decision to not return to her parents and continue living in Manoyama. Before bringing the news to the Midorikawa family, he also met Yoshino Koharu, the newly-appointed queen of the Chupakabura Kingdom.

Etymology

 * The name Kosuke means "prosperous" (浩) (ko) and "forerunner, herald" (介) (suke).
 * Kosuke's surname Midorikawa means "green" (緑) (midori) and "river, stream" (川) (kawa).