Me praying to God that this somehow, someway, continues into a 3+ volume work, but this chapter was a nice surprise. Definitely going to buy the physical.
This manga nicely depicts a fairly realistic (I think) romantic progression, albiet not in great depth because it's only short. But what really makes it great is Natsu's perfect characterization; it will be memorable. After reading the end piece and extra drawings in this chapter it sounds like the mangaka achieved exactly what she set out to do with Natsu's character and the result was exceptional.
Thank you for the translation of the extra! To others please if you can buy a copy off amazon.co.jp or wherever. They have digital and physical releases!
Author absolutely made the right call. I respect writers who protect the integrity of their work by not prolonging it more than necessary. All good things come to an end, and sometimes you only muddy your work by prolonging that end.