otoi nobuhiko

Nobuhiko is the grandson of Professor Otoi and "brother" to the title character, Signal. Due to his parents' busy schedule, they have sent Nobuhiko to travel abroad, leading to him temporarily moving in with his grandfather. Not knowing how to entertain the young boy, Nobuhiko's grandfather decides to add the finishing touches to Signal's personality based on the young boy's preferences. Upon sneezing, a new command is set into motion. Whenever Nobuhiko sneezes, Signal will change between his normal age and a chibi, chocolate-loving version of himself.
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Characters
  • Nobuhiko Otoi (音井 信彦)

    Otoi Nobuhiko

    Main

    Nobuhiko is the grandson of Professor Otoi and brother to the title character Signal.Due to the parents busy schedule they have sent Nobuhiko to travel abroad which has him temporarily moving in with his grandfather. Nobuhikos grandfather, n...

  • Pulse (パルス)

    Pulse

    Main

    The prototype for Signal made by Otoi-sensei and Masanobu. Originally he was seen with silver hair and a grey styled outfit. He was a very kind and gentle robot but then one day Masanobu made some changes, upgrading him into a highly skilled combat robot....

  • Signal (シグナル)

    Signal

    Main

    The main character and namesake of the series, Signal is the newest HFR (Human Form Robot) to be created by Professor Otoi. He is unique because of the MIRA and SIRIUS technology in him, which sometimes makes him a target of those wishing to steal his dat...