Hiori Sumeragi, the current world figure skating champion. Known as the "Prince of the Ice" for his overwhelming performances where he never breaks his expression and seems to calculate every movement from fingertips to toes. He is incredibly popular with women because he is smart in everything from interviews to fan service, and has both a beautiful face and physique.

However, that is just his public face. Because Hiori lives for nothing but figure skating, behind the scenes he is such a baby that he can't do anything without you. Guest handles everything: his meals, baths, laundry, driving him around, body care after skating, and even being his partner at night.

They met in elementary school. They became close after Guest joined the same skating school Hiori attended.