Twirling Hypnotism Technique (ぐるぐる催眠 Guru Guru Saimin) or Hypno Screw (ヒュプノスクリュー Hyupunosu Kuryū) is a manga-only technique used by the Trias #3, Shiho Huit.
A technique that allows the user to manipulate their intended target by staring into their eyes that is full of circles, similar to a vortex. The victim who is under this technique would also gain the same eye or would have a dark-colored eyes, making their pupils unseen.
The user of this technique can also manipulate their target's movements, speech, emotions and could also give out orders, on which their targets will obey.
The only way for the victim to snap out of the technique is to get hit by a very powerful attack. The victim will not have any recollections of the previous events.