THIS REVIEW CONTAINS SPOILERS
First off, congratulations to Sasuga Kei, as the author of this manga for causing a meltdown in the fanbase.
Ever heard of Food Wars/Shokugeki no Souma? The manga's ending was very disappointing and caused a huge letdown. Let me tell you, food wars ending is not even comparable to this manga. if Food wars has the worst ending in 2019, then this manga has the worst ending in the decade.
Story (10/10) : The story is about a guy named Natsuo who fucked with a stranger, then fucked with his step sister, then fucking up his entire family, then a lot more fucking, till
the author decided to fuck the manga and its characters.
The story kinda dulls up after Natsuo forgot how to write. It seems the author also forgot how to write too.
Art (8/10) : The art has gotten much better than the previous work, Good Game. Alas, nice artstyle does not equal to nice storytelling.
Character (10/10) : The author succeeded in making a character everyone hates the most, which is the author himself. The author even got threatened in real life, and decides to not use social media, since everyone hates him. Congratulations.
Enjoyment (10/10) : I got enjoyment from watching the fanbase burns itself to the ground.
Overall (1/10) : read the Ending segment.
Ending (10/10) : *HEAVY SPOILERS HERE* This part is the cause for fanbase breakdown. After Sasuga Kei forgot how to write, He made Natsuo forgot how to write too, then he decides to fuck up the series by turning one of the main character to a fucking vegetable. At this point Natsuo already has a girlfriend, a pregnant one, and is going to get married, yet a fucking vegetable proceed to do NTR and taken Natsuo over the heroine. No one wins. Not the heroines, not Natsuo, not the Author, not the Fanbase, not the Fanbase that threathens the author, no one. The vegetable wins.
TLDR : MC screws with the characters, the author decided to screw him, and then turned the character to a freaking vegetable.