Reviewing spin offs can be a bit tricky but I'll give it a go. Supposedly, this manga takes place some time after the events in the main OreShura line. We are introduced to a new female who served as the main driving plot of this manga. However the overall direction of the story was a bit wonky and somewhat melodramatic at times. The manga was told in a continuous flow as a proper story should with a proper introduction and ending wrap up.
As another reviewer brought up, the art changes mid way - twice, I think. While the new female character stayed pretty
consistent and appealing, the original female characters [Chiwa and Masuzu suddenly became genderly confused. Sure they were females by appearance but the drawer really went to town on their facial features. It went from traditional OreShura standards to becoming sort of unappealing to almost downright warped near the end. Well the latter might have been a bit of an exaggeration... maybe.
We have the same old crew from the parent story so don't expect anything out of left field. As mentioned earlier we are introduced to a new female who is the premise of the plot of this series. She was... "okay". She had a promising introduction with a potential to grow but her "15 minutes of fame" came and went without much development. The personalities of our characters were par the course and their antics were enjoyable without deviating from the main line.
A "legit" follow up succeeding the main OreShura line. Personally, it was just ~okay for me. As far as ranking it with the [4 koma] and [Ai] sub-series, this one falls a bit short in comparison. Not to say this was a horrible read, rather a combination of a somewhat forced plot, a shaky villain at best and the disruption of artistic flow hurt it's overall value. Casual readers avoid until you've familiarized yourself with the parent story and OreShura fans might want to take heed.