Each ep is only 12 long so it is a quick watch. This show has no middle ground, so you will either like it or hate it. Show revolves around a smart (middle school?) girl who is way to thirsty for the only guy in the show. She makes some advance gadgets and makes him test it to try and get him to like her or simply get closer to him. So most of it is crude humor and not really of shy of getting really weird with the main girl thirstiness for the guy. Most harem anime i have seen have more chillgirls than Ueno. Ueno is like a shy albedo.
I liked the show but this is not a show for everyone.