Natsu no Zenjitsu is quite the realistic romantic drama, definitely not for the faint hearted or one who can't deal with realism. This manga starts of a bit slow with the first chapter, but once you get through it you want to find out more and more how their relationship unfolds and what tragedy foreshadows these two. I really love how realistic the relationship is in this manga and how the author sets up the two characters so smoothly. This manga contains a lot of sex scenes, but I'd imagine the reader picking this up is mature enough to appreciate the scenes without judgment. The charactersare very realistic, which may make them not very interesting. For me, this was what I liked. This is a very serious manga and in real life, people aren't that interesting. This manga is about career, romance (mainly the female lead - Akira's occasional concern about her being the older of the couple), and personal conflict.

The art was fantastic, it has a very unique style. Motions and expressions were drawn well enough that you could feel the tension and emotion.

Akira was drawn very well that dignify her as the mature (traditional) woman. I'd imagine the author created her character with the image that is what most men late in the 20s or mid 30s would seek for in a partner.

Tetsuo the main character represents a lot of men in their early 20s, confused, frustrated, lost, and often selfish.

Finally, I know some people weren't happy with the ending. I personally found it very satisfying and like I said before the main selling point of this manga was the realism and it did just that. This is a very bittersweet manga and it is definitely written towards a much older audience. In some way, it reminded me of how Paradise Kiss ended, very bittersweet and real.