SOLU is not sentient by nature, and its replication is usually a reflex done on instinct. However, SOLU has a massive capacity for evolution and learning, and if a catalyst, such as Gentaro's love for Nadeshiko, is introduced, this capacity will skyrocket into full sentience that normal SOLU beings do not exhibit. Nadeshiko became fully sentient, displaying a full range of human emotions and understanding. However before this could be fully explored, she was kidnapped by Lem Kannagi and stripped of her body, forced into the SOLU Switch.