Kangoku: Injoku no Jikkentou, Kangoku Senkan Recommendations
A series of experiments being done to the girls resulting in bold results. 'Kangoku: Injoku no Jikkentou' does not have any mind controlling involved but seeing blackmailing girls to do as you command is pretty tempting especially if their friends are being put on the line should any disobedience arise. The changes on the girls are not in the tentacles stage which makes it easier to watch.
'Kangoku Senkan' is more on mind controlling experiments that haven't been tested and confirmed to work, the unknown results would be satisfying to watchers and the vengeance of the antagonist to those girls serves as an even sweeter revenge