Love this! Nice to see manga that can pull off sorta casual humor without going over the top. I really like the best friend character too. Overall 9/10 + the rice on the lid.
I bet she's just a semi-normal person who people make the WORST assumptions about due to her size and appearance. Like she carries the pipe to a recycling center or something, she pulls up grass from the sidewalks and road to help clean up the area. That sort of thing...
That series was a gem and I would have read like 500 more chapters of it. I feel like it only ended at 24 because the artist ran out of amazing reaction faces to draw and needed time to recharge their supply.