@Yatty12453
If the sword saint saw him day 1 with 4093 kills.
Then because he killed himself, he sees him again on day 2 with 4100 kills.
That means he committed more kills during those times, and besides, it's just encouragement on the ghost's part.
@Zergio200ism
Contains spoilers from the novel, but you should probably know soon. I still don't recommend you open the spoiler tab. It's not really that big of a spoiler, but an explanation you should see in a few chapters.
@The5thSeraph
It appears you didn't quite get it. At this point, isekai is a synonym with poor quality. Lots of things are going to bug you.
And since the entire premise here is her wearing this one costume, there is no chance of her wearing other things.
It does answer your question, but I...