tl;dr: A harem type work with solid heroines and a blank protagonist that surprisingly ends up serving as a decent deconstruction. This novel series is focused around the relationships between a guy and five girls that he discovers are his half-sisters. There’s the issue of an overarching story revolving around an impending deadline, but that largely just serves as a forcing function that requires them to interact and the actual interactions and resulting relationships are what actually matter. The heroines are interesting with a diverse set of personalities that work well together. The structure of the series is that in the first two books, Yoichi helpsthe heroines with various problems they have and in doing so gets closer to them. There’s some strong moments and a good amount of character development here in the heroines and decent relationship development. While this occurs, Yoichi is a pretty blank character and mostly only serves as a vehicle to interact and show off the heroines really, as is often the case with works like this. However, the third book actually acknowledges this fact, that the protagonist is a blank character that doesn’t seem to have any personality of his own beyond interacting with the heroines, and the story flips around to the sisters actually pushing Yoichi to grow, all of which was told surprisingly well getting a lot more intense than I expected and ultimately having a pretty strong impact. There’s also an interesting concept where there’s a character that’s there but isn’t emphasized in the text properly due to Yoichi being the narrator and him brushing her off though it’s clear that she should be given a larger focus, that ends up gaining that larger focus at the end as a part of Yoichi’s growth. All of this combined with the actual overarching plot line regarding the deadlines which was just sort of there but felt like something that needed to be resolved eventually also having a pretty solid conclusion overall makes the ending pretty satisfying. Throughout all this, there’s a lot of just nice and light hearted moments with Yoichi and his sisters interacting and a decent amount of light comedy, that overall make this work feel like a pretty comfy read. The art is also generally quite nice.