Seijuurou Uehara

Seijuurou Uehara (上原 清十郎, Uehara Seijūrō) was the husband of Airi Himekawa and the legal father of Taiki Himekawa. Initially believed to be Aquamarine and Ruby Hoshino's father who murdered their mother, it is later revealed that he had been cheated on himself by his wife with the real father, prompting him to commit murder-suicide with her.

Appearance
Seijuurou has light-colored hair and small dark-colored eyes.

History
Not much is known about Seijuurou except that he was married to Airi Himekawa who cheated on him with Hikaru Kamiki, which resulted in the birth of Taiki Himekawa. At some point, however, he learned of his wife's affair and subsequently became hysterical, killing her before comitting suicide himself. Akane Kurokawa also theorized that it was Hikaru who told Seijuurou about his relationship with Airi, to have her killed whilst leaving no traces back to him.

Etymology

 * The name Seijuurou means "clear, pure, clean" (清) (sei), "ten" (十) (juu) and "son" (郎) (rou).
 * Seijuurou's surname Uehara means "above, top, upper" (上) (ue) and "field, plain" (原) (hara).