This review is heavily based on personal opinion and is heavily biased because of the human nature, feel free to agree or disagree.

Story: 9/10
The core of Yugami-kun ni wa Tomodachi ga Inai is that it's a character-driven Slice of Life manga and honestly.. it's kind of weird, I say that because I haven't seen anything quite like this before and the author did a great job of writing the story and ending it in a really satisfying way that probably won't work in any other Slice of Life stories.

Art: 7.5/10
The art is good, It's definitely not in the same level as Boichi and Yusuke Murata's breathtaking details or Ishida Sui's really artistic art style, but the author definitely knows what they are doing. So far after my 2nd reread, I haven't noticed any mistake in terms of perspective, anatomy, etc etc. It also helps that it doesn't fall into the "generic-looking" folder in my brain, so it gets an extra half point.

Character: 10/10
As I said before, this is the core of Yugami-kun ni wa Tomodachi ga Inai, character writing. Every single character, the interaction between them, and how they reacts to events happening in the manga are well-thought out and good, probably too well-thought out in fact for just a Slice of Life manga.

Enjoyment: 10/10
I love this manga, I really do. Seeing Yugami's relationships with other characters grow, Chihiro's journey on making friends, Kadota (and pretty much anyone that's involved with Yugami in some way)'s reaction to whatever Yugami is doing, and the most enjoyable of all, Yugami's relationship with Chihiro. I have both laughed and and had my heart broken just because of how immersed I am and how much I enjoy this manga.

Overall: 10/10
Yugami-kun ni wa Tomodachi ga Inai is a hidden gem that's hidden within the many titles of Slice of Life manga or just stories in general. Anyone that wants well-written character that is just about people's normal, everyday life should definitely try this one out. Reading this has been a journey, and even though I'm a really forgetful person, when I remember this manga, I will definitely.. cherish it.