Artist
http://www.pixiv.net/member_illust.php?id=941345
Gallery
http://www.pixiv.net/member_illust.php?mode=medium&illust_id=61654041

What does it all mean:

1. Are all of the girls who bullied the teacher, were guys too?
2. Did the teacher morph into the girl after putting the suit on, and then needs to have his male suit being made so he can be a guy again?

Thanks @akathibi for sharing this....

Base +6, AlekSlayer +9, Gosei +6, Crosswire +6

The girls here are real girls - i believe the prequel to this was a story about 3 magical girls getting body switched with villain women. You can search for it, its the same author.

Base +1, ensane +9