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General Unit Data
Original Unit Name: S.E.M
Translated Unit Name: S.E.M
Unit Members: Michio Hazama
Rui Maita
Jiro Yamashita
Production Agency: 315 Production
Debuted in: THE iDOLM@STER: SideM
Image songs: ∞ Possibilities
Study Equal Magic!
Sa-yo-na-ra Summer Holiday
From Teacher To Future!
Happy's Birthday

S.E.M is one of the 16 idol units of 315 Production. The unit is a trio consisting of former school teachers Michio Hazama, Rui Maita, and Jiro Yamashita.


S.E.M. was scouted by the Producer while at one of their many auditions. They failed many auditions prior to this. Their leader, Michio, wanted to form an idol group in order to convey the passion of learning, while also making his students smile. He realized this after Rui invited Jupiter to perform at their school's cultural festival. He then recruited Jiro and Rui and began auditioning to become idols.


In Game

In Adaptations

CD Recordings


  • S.E.M stands for Science, English, and Mathematics, which are the subjects the unit taught.
  • Two of this unit's voice actors, Kento Itou and Yoshiki Nakajima are also formed a real-life band named UMake.
  • In THE iDOLM@STER POPLINKS, all idols in this unit share the Rainbow attribute.
  • They are also the second unit after Positive Passion to do a collaboration with Nissin Kare Meshi.

Character Gallery