is Rikuo's best friend and an honors student. His father consistently calls him Masakazu or Masa, although Akiko once refers to him as Masa. Everyone else simply calls him Masaki. Masaki claims not to have robots at home but in actual fact has a household robot designated THX, whom he calls Tex. He distrusts robots and helps Rikuo to investigate Sammy's covert activities.
Nojima Kenji, Yuuko Sanpei (child)