The developping friendship between Touka and Uka. It is both funny and heartwarming at times. Some highlights:
Chapter 27: The entire exchange between Touka and Uka when Uka revealed that she had to stay at Takamagahare for awhile to support Inari, culminating with Uka asking Touka to carry a part of her and he accepts::
Touka: Come back. To me.
Uka (blushing profusely): Uh... okay...
Uka: Ahh, quickly. I want to quickly return to your side.