After finishing the whole series, I went back to chapter 1 just remind myself of how much the characters and story evolved over the course of 32 chapters.
Luna was a boss, I liked her, good yandere. Ryo, very typical MC, not really original. Yet, that's usually the style in these Japanese harem stories. The MC is supposed to be someone you can relate to, or easy to step into their shoes.
I'm just really glad the MC was an individual human being. The majority of yandere stories online are these roleplay yanderexlistener types where you place your name as the main character. I don't like this because 1) the majority of these stories are poorly written and 2) I don't like placing myself into the story as the main character because I know I would react differently than the MC.

A critique that I have for the author, PUU7, is that static nature of the characters. In the 32 chapters we are introduced to several new ashens and silly Yumi to Ryo's Harem. Yet, they don't progress or change in their characters much. I just wanted to see some more character development.
Of course, I can't complain since static characters are common in harem mangas and anime. For example, DATE-A-LIVE's anime adaptation. I liked it, but the only character to progress and to have some depth was Kurumi.

Luna, your main girl, felt a bit static to me. She never seemed to change in her M.O. She was crazy yandere that killed people that she felt like were threats to her relationship with Ryo.
Then again, I liked the mystery behind Luna. You managed to keep us constantly guessing about Luna's sincerity and motivation. It gave me that eerie, but attractive vibe from Luna when she was alone with Ryo. Is she just cold caculating killer that is using Ryo as a puppet, or does she truly have emotions. This wonderfully conflicted by supposed fact that the strongest ashens don't really have emotions, they are just good at faking.

That mystery is used for the yandere in my story: The Ideal Couple: Conditioning. I like having the reader continually guessing if the yandere is truly insane, or if the yandere is simply putting on the perfect show, all apart of some master plan.

The only real criticism I have is that the story hasn't finished. We don't get find out the truth about Luna. Who will Ryo choose? Who is this new Azumi Ashen? Does the organization capture them?

I'm just crying cause, as per usual, I'm late to the conversation. This story was posted back in 2016. The relevancy of has apparently dropped, but I like original fiction!

But to wrap up, I just wanted to let you, PUU7, that Re:Luna is my favorite yandere story on the site. Regardless of my critique, it really is well-written, with cool characters, and detailed action scenes. The manga needs to be a thing.

PS Yumi grew on me

Ok, I had to admit, I saw that coming.

What kind of haunted house has actual trapdoors?!

And we're hitting a point in the original story again, though without Daike. It's going to be interesting to see where you'll take this.

Oh man, way to ruin a moment Luna.

Anyways, I like that Ryo is learning how to fight. It feels like he won't be as useless anymore.

This feels kinda like a filler...

Uh, I think you uploaded the wrong chapter...

Ok, I feel like it would've been a bit less confusing to describe how Luna found Kaori and Daike, and to describe their battle. Because before, Kaori managed to defeat Luna with Daike.

Also, how did Mayu know where they were? And isn't she blonde, not blue-haired?

Alright. I love the updated writing style; the added details help explain Ryo's thought processes and creates a sense of immersion.

So, obviously, this is the point where the story diverges from the original. I'm excited to see where it will go; I have high expectations!

Though, what happened to Yumi? She's a part of the harem, right?

Awesome story. This really feels like it could be an anime.

Why was Ryo so mean...? It seemed unusually OOC...

Mayu is one of my favorite characters. I hope you update!

A very well written fight scene, but I have a few questions.
First, why doesn't Ryo do something? I mean he's scared the first few times, but he's been in several fights by now and he knows Luna, so why doesn't he make them stop? And why didn't he say anything when Mayu started implying that they slept together?

Also, how many bandages does Ryo have? And he's got to be a medical expert too with how many times he had to bandage up cuts...

Another plot-oriented chapter. I like Mayu particularly.

Dammit Ryo, love her already!