Personality & Character
Hikaru is very bubbly and energetic, Hikaru loves to tell people about herself. When introduced to the Nadesico's crew, she starts off by stating, in high tempo, that she's 18 years old, a self-proclaimed mangaka, has blood type B, and likes pizza crusts and soggy rice cakes. She can be as playful as Megumi Reinard at times, yet at some point in the series she reveals a more serious side of herself.
She also has a talent for making plastic models, which she practised together with the ship's chief mechanic, Seiya Uribatake.
Hikaru joined the Nadesico along with Ryoko and Izumi right after the Satsuki Midori 2 space colony was attacked by the Jovians. While Ryoko saved Izumi and several Aestivalis units, Hikari survived in an escape pod which ended up colliding into the Nadesico. Lost, she then crawled around inside the air ducts until she noticed an episode of Gekiganger 3 being played in one of the rooms below and being a Gekiganger fan she remained there. As she was in Akito's ceiling, Akito overheard Hikaru crying as an emotional scene played and shortly afterwards, Hikaru tumbled out of the ceiling and fell on top of Akito. (Nadesico: "Charmed by Aqua Space")
After the death of Gai Daigoji, Hikaru became the most avid fan of Gekiganger on board the Nadesico.