This was absolutely brilliant. Apart from "Slider" and the ad insert "Tsuki no Ya's Sales and Purchases", the rest felt extremely authentic and relatable, and quite moving.
It's too bad Goggles never got the planned sequel the author was thinking of, as I felt like a lot about the three characters were left unexplored (along with the grandpa, even though he did receive a prequel).
Alas, why is this author not more prolific? He only seems to make short oneshots or standalone 1 volume works... His art is amazing and the narratives are compelling. I wish we will see more works from Mr. Toyoda.