ah, I see. I'm no good in animation but this one looks like he's just "fast walking" up the stairs. Maybe if he leaned forward and maybe bounced a little while he was running?
At this point I'm sure no one wants to go back and edit it cus he's already colored it. He'd have to make more frames and color those while making adjustments to accommodate all that. Oh godddd. Sorry, your comment was definitely valid, I just wanted to point it how much work it would be to go back and add all that in. If it was for a show or something then definitely, but even anime's now a days don't go back to fix a few seconds of iffy walking because they know it'll be absent from the eyes of the audience in a few seconds and none would be the wiser. Sooo, although it's not perfect this definitely needs to be applauded for the for the fact that it's so well done, so crisp, and so well colored, taking into account certain things as light and smoke and a burnt mark on the wall. It's amazing.
Sorry again, if this seems a bit bogus, I don't mean it in that way.
Sorry again, if this seems a bit bogus, I don't mean it in that way.