Sentimental Komuro Michael Sakamoto Dada-sensei (センチメンタル小室マイケル坂本ダダ先生) (or simply Masada, or Seccom Masada) is a character found in the Spaceship, playing a song on the large piano. If interacted with, he plays a portion of a song, then turns to Madotsuki to allow her to complete the empty portion, twice in a row.

He has an unknown connection with the Pirori in the Barracks Settlement, as a drawing on the wall of one of the buildings contains the symbol used to call the Spaceship.