This is a manga I highly recommend. The manga goes from the cute and lighthearted describing various interactions with the demis to trying to describe what real and somewhat heavy problems demis face in the world. Takahashis passion to research demis is one of the driving forces and one I find enjoyable. All characters are likeable and has distinct personalities and they interact very well with eachother. The tone in this manga is different to many mangas with a school setting I have read. At first I was afraid it would devolve into a harem but such fears have luckily not been made true. Themanga falls in the seinen category which means it can have a more serious tone and tackle bigger issues intended for a more mature audience.
I was hooked after one chapter and the manga just kept on delivering. This is one of my favourite currently published mangas.