Despite having episodic chapters which barely relate to each other, Maru Maru Seyo!! was a great attempt at a historical fiction manga. The setting is great - famous historical Japanese figures all attending a high school. Albeit cliche, the author was able to (for the most part) accurately depict each character's personality.
The story primarily focuses on Ishida Mitsunari, one of your classic strict, stern, 'no fun allowed' megane-wearing tsunderes, as he tries to uphold the school's quality and standards. Each chapter strays a bit from the classic school life episodes, and each chapter has multiple panels worth a good laugh. However, despite featuring multiple characters,
rarely does the story go into the perspective of another character, or even the main character. It is difficult to tell how each character feels about one another and their relationships between each other. There is also barely any character development, which I'm a bit disappointed with.
The artstyle is very clean and shoujo-esque. It is very fitting given the school scenario as well as the overall plot. There isn't a lot of flashy effects or tones used, but it doesn't take away from the appeal. Each character is very distinct from each other as well, even in scenes where they are chibi-fied or are in a position where it may be difficult to identify them (eg: lying face-down), I have to commend the author for being able to do this so well.
Overall, I feel as if this manga could've further developed into an amazing series if it were given more volumes/chapters to work with. Even the final chapter doesn't seem very final chapter-like, it feel as if there is another chapter afterwards. But given its short 8-chapters length, I feel as if this manga did a pretty good job of telling its story.