There are many things to complain about, I won't go as far as insulting the way she was dressed since lewd loli's are definitely a selling point of this manga(and I do enjoy it). However, even lolicons will tell you there is a time and a place for fanservice. This was not one of them.
Just 3 pages above we finished strong with a conversation with the GM and the MC was worried about the bleak looking future. That would have been a great ending right there. But no.
The author decided to end this with something else, perhaps going for a more direct cliffhanger. So a new character is introduced right in the last panel. Not a bad idea in and of itself. However, this character is a lewd loli in one of the most ridiculous outfits I have ever seen... All the tension from the rough climax we just had plummets too the ground.
If she was introduced next chapter, or if they had left her as a more mysterious figure (by drawing only her shadow or only showing her hooded back), we could have preserved the high we got from the rough climax. I would enjoy this weird outfit just about anywhere but here. Before the climax, after it and in the next chapter, but by god not here. It just kills it