User blog comment:SuperStrawHatSaiyan/Are You Gonna Fix It, Toei?/@comment-972068-20130105043951

That picture on your gallery is an illusion. Either that, or a mistake from Oda.

The arm is in focus for the viewer, and the lines around it draw the reader's attention to it. There's no reason to draw steam on any part of the body. Another reason he didn't draw steam is because there's no room.

Toei didn't make a mistake. They fixed it.