these are very old images... The seasons one I remember particularly well. I'm not sure why the dupe check isn't picking them up, are they different resolution or whatever?
They say Zattsu did that to troll, to make it originally Violent, but post a non violent edit, then post the original violent just to acuse people of editing his work, why? dunno, it's typical trolling.
check Zattsu's tag, i think they are at the very beginning and as you may read in many comments on his works, it is explained the whole ordeal of how he trolls through doing this kind of edits himself and blame it to others.