S.E.M. S.E.M
An [[idol]] group of former teachers working for 315 Production in [i][[idolmaster_side-m| THE iDOLM@STER: SIDEM]][/i]. The group consists of [[Hazama Michio]], [[Maita Rui]], and [[Yamashita Jiro]]. 

The acronym stands for their teaching fields: Science, Mathematics, and English respectively.
s.e.m (idolmaster)