I dropped this manga back on chapter 58 (and that was after forcing myself to keep reading a few more chapters), It seems It just went and became utter shit lmfao.
From what I understood, half the series ended up being about Melon. And I guess he only existed for... what exactly? Make Legosi doubt himself for 2 seconds because we all know he will still go ahead and fuck Haru, and make his contribution to making a Melon 2.0??? Their society is gonna go to shit lol.
On a serious note, It doesn't seem like Melon is evil because he is a half-breed, but the mangaka wants to paint it as a "he just is that way, nobody else who cross-breeds will have that problem!". Lame.