Violet is a newcomer Auto Memory Doll at the CH postal company. She has wanted to know the meaning of "certain words" she received from Gilbert when she was a soldier. (Source: Wikipedia)

Kiyotaka is an inconspicuous student who is very poor at communicating with other people even if he wants to, thus he tends to isolate himself. His emotions are hard to read. He received "perfectly intermediate" scores on his entrance examination, since academic and athletic-wise, he is average. (Source: Official site)