- Name: Seiichi Itagaki
- Position: Movie Designer, beatmania IIDX 16 EMPRESS -> present
Seiichi Itagaki, better known as Steins/Stain, is a graphic designer from IMAGICA Imageworks. Since beatmania IIDX 16 EMPRESS, he's made videos for the IIDX series. He's also done at least one video for the GF/DM series as well. He recently designed a generic video for beatmania IIDX 19 Lincle, a first for a commissioned artist.