The game is known for its use of established science fiction elements in its story, along with numerous references to several works of literature, including Antoine de Saint-Exupéry's The Little Prince and Karel Čapek's R.U.R.

Despite the lack of humans, the spaceship St. Exupéry continues its journey through space with the purpose of finding another planet suitable for colonization.

While some robots argue that they have taken humanity's place as the dominant race, the leadership decides to awaken the boy inside the capsule to try to raise him in hopes that he would grow to become a suitable leader.

She was originally asked to take the role of the "older brother", but became the "next door neighbor" due to her unwillingness to be near the protagonist.

She tends to err on the side of honesty, and her straightforward approach to things puts her at odds with Shirotsumegusa on occasion.

While Ichihiko's well-being is her top priority, Mizubashou fears of what would happen if he were to discover the truth behind his "world".

R-Kobatomugi (R-000111014L R-コバトムギ) – A playmate model-C chapekku that is given the role of teacher at the school Ichihiko attends.

Tanpopo joins Ichihiko's family as his "little sister" after Mizubashou decides that he needs to learn the joys of being an older brother.

Taisho was drafted into Ichihiko's world after Mizubashou found out that he taught the protagonist how to talk like the saberhagen droids.

HAL is considered to be the top authority on the ship, its commands capable of overriding any orders given by commander-class chapekku.

Dialogue choices appear from the second play-through on, allowing Ichihiko to end up with Hinagiku, Mizubashou, Shirotsumegusa, Tanpopo, Kobatomugi or Benibana.

While they have similar biological processes, they do not "heal" the way a human does, and instead require regular maintenance to keep themselves in top form.

The EES Lens can also be used as a scanning device, allowing chapekku to see and analyze objects and machines that are not directly in front of them.

They can be used for numerous things, including stabilizing atmospheric conditions and limited maintenance of life forms (trees and flowers).

Capable of creating multiple images of themselves using the nanomachine network, and can use them to alter programing code to enable or disable other robots.

Saberhagen – Multi-purpose droids that serve a variety of functions on the ship, from cooking food to mechanical maintenance to even acting.

Character Designs – Mahiru Izumi (泉 まひる, Izumi Mahiru) Mecha Designs – AKINOKO, Gorou Murata (村田 護郎, Murata Gorō) Scenario – Hiro Itou (伊藤 ヒロ, Itō Hiro), Hijiri Nakajima (中島 聖, Nakajima Hijiri) Music – Hideki Higuchi (樋口 秀樹, Higuchi Hideki), Ryuu Umemoto (梅本 竜, Umemoto Ryū) Voice Cast