Kinda anti-climatic, as expected of Keikenchi, and to my knowledge, there's no sequel to this.
For such a short manga, this is incredibly hard and annoying to translate (2nd hardest out of all I have done), so apologies if there's anything text that looks weird (especially in this chapter).
The last bonus chapter will be the bonus pages which I left out, it will take longer. However, at first glance, it's mostly about fgo, so if you got no interest, then it's fully finished.