User Natsumi in my opinion is not using ESP
Garden 1 replay, Medori shotgun is quite obviously poking through the doorway.
Through out the other garden replays i can't see anything that would indicate ESP, he uses tactics as going to the top centre water (Dragon statue) to be able to check the right passageway through the meshed fence, as to which at times his opponents did come that way and he was able to encounter there play. Also you can tell when he pauses for short amounts of time's he's trying to locate their position via sound.
Factory replays, to me there is nothing that stands out as such other than the final kill on Zone Style in replay https://www.sendspace.com/file/fgcg3w, which for me I don't feel is not enough evidence to ban the user.
