These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
In chapter 63, there's an extremely small mini-shrine with small children's hands coming out of it, asking for help. VIZ even typed out the multiple "Saaaaave ussss~" requests in a spooky font. It's probably the creepiest moment in the entire series, so far.
The main difference between this and most other ghost manga is that RIN-NE focuses more on solving the spirits' problems to make them go on instead of beating the shit out of them. There really isn't much fighting here.