Kotone BE

[Matsu-sensei]

I could've sworn this was posted before, possibly in the Pixiv thread?

The comic later confirms that she just stuffed a Magneton in there, with the third one making a bulge in the pants. The owner of the Magneton (I assume) is running up in that last panel, then reveals the Pokemon after ripping it out in the next page. The artist made a gag Magneton op-pad image based off it too.