Some commenters are saying this got axed. Is that true? Even though it was short, this still felt like a proper ending that completely fit the tone of the story. As others have also said, it is to the manga's benefit that the author stuck to the comedic light hearted SoL plot instead of going the heavy romance route.
I'd say this sort of comfy relationship where the FMC and MC act more like companions actually makes for a more convincing ship than most cheesy lovey dovey pairings in other manga. Yugami-kun's author handled it perfectly, and I'd say it was done well for this manga too.