She is Star Plasma Vessel for Master Tengen's.Riko is an outspoken and feisty young woman who appeared to steadfastly believe in her role as the Star Plasma Vessel.Riko quickly became flustered when it came to people she cared about and her ability to be with them, resulting in an outburst of tears when that's thrown into question.Riko ultimately decided she wanted to live out her life with everyone instead of merging with Master Tengen.she enjoys spending time with her friends at school as well