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.
Harsher in Hindsight: In chapter 24/episode 9, the characters mention that the park where they're attending a summer festival has an ice festival in the winter. Komaba jokes that Tokiwa will probably have flunked out of school by then anyways. Then at the start of the winter arc, Komaba drops out of school.
Upon learning of the above plot twist, re-reading/watching the Autumn Arc just becomes gut-wrenching, such as the part where Aki told Yugo that they should just let Ichiro savour the moment working on building the racetrack, and not worry about him getting to exhausted.
Nausea Fuel: None of the dirtier farmwork is overtly graphic, but this is not a series that can be easily recommended to anyone with a weak stomach or a fondness for farm animals. Of particular note: the butchering process in Chapter 77.