From chapter 1 to 78 a 4/10.

Wow! that was very disappointing.
Especially the final arc. Characters were thrown in the trash along with their developments. Only for a horrible romance to happen, then die, then came back again to life. The plot is all over the place in the final half. The worst plot point and holes (little robot killer?). The first arcs had some very bad artistic decisions, that made the art descriptions and scenes very blurry and hard to understand, everything was always in a dark tone. But that was just the first half of the manga. After that someone must have called the author in the back and said "I don't understand these arts at all, bro", couse they all look bright and clearer and more easy to understand/appreciate at the final arc.
in short, the art is good, especially the backgrounds and objects in the background.

Plot is messy, the end is horrible (and bizarre).
What a shame for a manga with such a good start (plot). The romance created between the chimera and tanikaze is bizarre, forced and often disgusting. It is just... strange.

To summarize everything in the phrase of a great sage:
"My disappointment is immeasurable and my day is ruined"
Bad manga 4/10.
Waste time with it.