Kikugawa Kasumi - 16 years old. The president of the Gehenna Hot Springs Department. Her mission in life is to develop hot springs wherever there is geothermal activity, and she doesn't care what's in the way. She enjoys the unanimous support of her club members, but outside of her club she is a wanted criminal. She is always looking for new places to develop new hot springs, be it in the frigid grounds of Red Winter or areas unusual of having hot springs like Millennium. 