Riko Amanai was a second-year student at Renchoku Girls' Junior High, though she's best known for her role as the Star Plasma Vessel—essentially chosen to merge with Master Tengen in 2006.
She lost her parents in a car accident when she was four and was raised by Misato Kuroi after that. Her whole life was shaped by this responsibility to Tengen, which set her apart from most kids her age.
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