[Shinso had tested his quirk a bit. Sure, it was technically illegal back home but there were always bits and ways to see how he could get it to work. Without proper training, though, it's not like he knew how to expand it. This would actually be a great time to practice, if it only worked.]

It doesn't always work. It depends on how willing they'd be to go along with my suggestion anyways.

[And, of course, the target retained full consciousness. Usually, with Brainwashing, the victim entered that sort of stunned, unresponsive state. There definitely wasn't that here, even when he could feel that he was successfully activating his quirk.]

It's not worth you breaking a bone to try and push it anyways. [It's almost like he was reading the other's mind- or, well, most of his experience seeing Midoriya's quirk involved breaking a bone anyways.]