════ ⋆★⋆ ════ Considerations ════ ⋆★⋆ ════ ● This is a spoiler-free review ● 70 in my scoring system means "average". ● I got to read this because of a funny review posted here on AL and got interested in the topic of sleep advice.
════ ⋆★⋆ ════ The Story ════ ⋆★⋆ ════ The story is centered around Kiichi. A high schooler who lives with his cousin, Hana, who also happens to be a teacher at his school. Hana is someone who loves researching sleep and acquiring sleep aid tools.
There's not much to put as a synopsis as the manga just revolves around their daily lives. If I am to be totally honest with you, there's no big story in this manga. The chapters are episodic, with a little development in the relationship between both cousins.
But, I am writing this review not because of the story, art, or characters. I'm doing this review because of the sleep tips it contains. Pretty much every chapter has one sleep tip. They go through sleep cycles and tips, whether it's a pillow, mattress, or routines. As someone that likes the science of sleep, I couldn't spot any mistake. The author also gives a list of books that he references when writing this work.
════ ⋆★⋆ ════ The Art Style ════ ⋆★⋆ ════ The art style on Koi to Utatane is good. They do a good job of capturing background scenes and expressions. The characters are well drawn but don't differ too much. Many of the characters have very similar hairstyles, with the only difference being their height, personal style, and hair color.
Another point to add in regards to art is that whenever they're explaining tips about sleep, using acupoints, and such, they're very well detailed. I find that a good aspect of the manga. ════ ⋆★⋆ ════ The Characters ════ ⋆★⋆ ════ There are a small number of characters in this manga. Hana and Kiichi hold the spotlight, with some of her students and sleep aid supplier appearing in the background. They're not very well developed, they don't change as the series progresses, and there are only lapses of background information about both Hana and Kiichi. ════ ⋆★⋆ ════ Conclusion ════ ⋆★⋆ ════ If you're like me, you skip everything and read only the conclusion because you don't want to get spoiled with other themes. So I will try to be brief on this point:
Maybe read it. If you're someone that has trouble sleeping, you will get a lot of information (especially if you've never done some research on it) from this manga. If nudity and incest are themes that you can't accept, don't read it.
If you don't have trouble sleeping and are just looking for a romantic story, To be fair, you can find better ones out there.