Kingohger Production Notes Ep. 16
イシャバーナの高貴な医者であるシロンはゴッカンのカーラスと恋に落ち、ゴッカンへと渡ったといった裏設定があります。
Shiron is a doctor from Ishabana. The noble doctor fell in love with Karras and moved to Gokkan for her.
血縁関係はないはずですが、こう見るとなんだか親子みたいだ…。
Rita is not related to Karras or Shiron, but they look just like a family. (it fits with what's presented in-show but you could say the wording is referring to the actors instead)
Gokkan, with poor reception, has only noise-filled picture quality, and a falling-behind release schedule, so Rita had to avoid Himeno's spoilers with a scream in episode 11.
隻眼 means eye, singular. This sparked discussions that Rita is blind in the right eye or the blue eye is a prosthetic. (Or could it just be a typo?)
Although Himeno and Rita don't get along well usually, since they share a similar past, they can understand each other's pain. After today, maybe a bond is forming between the two, for a little?