Okay, I put this off long enough (I was busy grading; life is hard).
Here are just a few brief ha ha almost fooled you into thinking I could be brief for a second there thoughts on Noragami chapter 78 under a cut to avoid spoilers.
95% of what I have to say boils down to:
Calm down.

Hey remember that time Yato went off a life-threatening journey and the only thing that saved him was us NOT sitting around waiting for him to come back?
…Yeah, me either. HE’S EVEN WEARING THE SAME OUTFIT AS BACK THEN.
I don’t want to say that Yukine has whatever is coming coming… But when this is how he responds to threats, he sort of has whatever is coming coming. Yukine knows for a fact that Yato’s life is constantly in danger, that he has dangerous enemies, that he gets into trouble at the damn drop of a hat… And he’s still being lax here. This is a prime example of not learning from past mistakes, and that classic Noragami karma is about to smack him hard as hell for it. The manga is literally sending glaring warning signs: You should be with Yato. WHY aren’t you with Yato? What happens after this is going to absolutely be a product of the failure on both sides–Yato’s failure to stay with those who are important to him, and Yukine’s failure for not fighting harder to stay with Yato. Hiyori got smacked already at the end of this chapter for forgetting Yukine and going off on her own to chase Yato, a selfish decision that she paid for with her happiness.
The manga is setting up a very purposeful parallel here, I think:

Just as Bishamon and Kazuma become lost the moment they are separated from each other, Yato’s sense goes out the window the moment he’s separated from Yukine and Hiyori. Noragami repeats this lesson over and over again: We need each other. We need to rely on others. We need to have guidance, and trust, and support.
And Yukine and Hiyori’s failure to do that over the last couple chapters–as well as Yato’s failure to accept their closeness–is going to send them all straight into another crisis. I’ll eat my own post if things aren’t about to go from bad to downright terrible again, with this issue of failing to rely on each other at the very heart.

How much of Nora’s “emotionlessness” is a result of this line of thinking? If she doesn’t think that she should behave like a living girl, does that allow her to think and act in ways that other shinki, who cling to their human lives, can not? Is her ability to transform potentially linked to her casting aside humanity? I am interested to see how far this dismissal of being alive impacts a shinki’s abilities.
Iwami and Kiun are other shinki who might share this mindset to a certain extent, and we certainly know that Kiun is powerful…

Is it just me, or doesn’t this scenery looks very similar to:

The scenery we saw on the page where Father was holding his dead lover/wife/whoever Freckle Girl was to him?

Is it possible that that’s her body? That he didn’t even bury her but went right on living right next to her corpse? JUST HOW MESSED UP IS FATHER? Veryyyy interesting.
Also, the fact that Mizuchi says there were only three people in the beginning implies that she never met the Freckle Girl and that Freckle Girl was not around at the time that she and Yato existed.
Father was only “playing house”–to replace the real home and happiness he lost?

The concept of “playing house” in Noragami is very interesting. It only comes up in the context of gods and humans; we’ve seen it three now in the context of (what is likely) a god playing house with a human: Kofuku hurt Daikoku by trying to “play house” and raise a child; Bishamon hurt her shinki (and was hurt by her shinki) for trying to foster a motherly relationship with them; and Father pretended at kindness and care for his “children” while they were all aware of the real truth.
You could argue that one of these things is not like the other–both Kofuku and Bishamon did what they did out of love, while Father is evil–but I wonder if the third case is really that much different than the first two. Why did Father raise Mizuchi and Yato like his children? Was this a one-sided endeavor in which he bought their loyalty with occasional moments of kindness? Is that all there is to it? Or is there something else going on here?
How much of Father’s “playing house” was pure cruelty… and how much of it might stem for a desire for the very thing Heaven denied him?
Let’s see where this goes, hmmm!

It might be too early to call it, but I’m going to put this out there right now: Mizuchi is a child who died without ever being named.
She’s not affected by god’s greatest secret because she has no human name to remember. Father never said that she knew her name, only that she knew her own last moments. This is why she acted so surprised when revealing Sakura’s name turned her into an ayakashi–Hiiro did not understand the power of names back then because she had no human name of her own for reference. Her power to inflict Liberation on others stems from the fact that she has nothing to tie herself to the Near Shore. She was an unwanted child in her human life and continues to feel like an unwanted child in her life as a shinki.
Holy shit Adachitoka, COULD YOU NOT??? I mean, I don’t know if this is right but it FEELS right and nnnnnnnnnnnhhhhhh I don’t want this; it hurts.
(By the way, the top two leaves fluttering in the wind appear to be gingko leaves, a powerful symbol of endurance and duality in Japan.)

An innocent symbol of child-like play with three people in the boat to represent the family she longs to have but never will? Just kill me now, okay? Just kill me now.
Although this is interesting because we see her first boat fall apart and the people tumble away as she’s talking about playing house. So either this is a second boat, or she put the first one back together sometime during her talk with Yukine. So perhaps this second boat represents a new bond, such as between she, Yukine, and Yato? Mmmmm, who knows???

I’m glad that I was right and Yato chose not to name Kazuma. It was the right choice, even though I’m sad we didn’t get to see what Kazuma would look like as Yato’s shinki. (Well, then again, there’s still time, isn’t there?) We got trolled hard by Scissors-kun, lol.
The line up there is very interesting, isn’t it–because it’s such a Father way of thinking! This is Father’s exact ideology, that humans have no reason for loving the gods and yet they do anyway, accepting the cruelty and abuse of Heaven without question. Kazuma is tripping over the same issue from a different perspective–instead of having something taken from him by Heaven, he’s suffering because of something Heaven is not capable (or perhaps willing) to give. It’s a dangerous line of thought that leads down a dark path. This is honestly the scariest thing Kazuma did all chapter to me!
Is he thinking of Hiyori when he says “people like me” here? Or is he implying that Yato has hurt him in ways similar to Bishamon? The ambiguity of the references here is worth noting. Also worth noting: Yato has no idea what Kazuma is talking about here. Yato doesn’t share his father’s mindset and he doesn’t share Kazuma’s either. I don’t think that Yato sees a huge divide between the love gods can give and the love humans long to receive. He knows they’re not the same (maybe they’re not the same), but I don’t think he would let the issues that Kazuma is dealing with separate him and Hiyori… Or perhaps I’m just too hopeful. XD
All right, all right, now to the thing everyone is freaking out about…
Why are y’all so anti-Kazuma??? He’s not attacking Hiyori out of cruelty–he’s trying to protect her.

He even says it himself–he recognizes the signs of Hiyori’s infatuation. He sees her inability to avoid getting tangled up in the calamity that surrounds Yato. Who the hell do you think he’s really talking about here? He’s not just talking about Hiyori–he’s talking about himself.
The suffering that he has felt from loving Bishamon and not having that love returned is a pain akin to a curse. It’s enough to drive him to want to die, to fill him with such deep despair that he is willing to forsake all of his morals, his name, his “life”‘s meaning, everything he stands for. Since falling in love with Bishamon, he’s faced catastrophe after catastrophe, seen and dealt with things no human should ever have to face–witnessed friends murdered and murdered a friend, betrayed Heaven, turned his power on literal gods… There is NO DEPTH Kazuma will not sink to out of love for Bishamon, and that’s agonizing. He’s in pain, guys.
And he sees the whole damn cycle about to start again. He sees Hiyori’s feelings. He sees her love… And he sees how much Yato is ruining her life. He sees her forgetting her human family, ignoring their concerns, ignoring day-to-day human activities, being exposed to all the risks that Yato brings along with him, actively suffering at Father’s hand because of her involvement with Yato…
Kazuma sees that Hiyori is going down the exact same path of suffering, of “playing house” that he’s been on for hundreds of years, and so he does the only thing he can do to try and dissuade her: he tells it exactly like he thinks it is. He’s not lying to her here. He genuinely thinks what he’s saying is the truth. He genuinely believes that gods cannot return human feelings in the way that he and Hiyori desire, and that her pursuing Yato will only end in sadness and pain for everyone involved. He’s not wrong to want to stop that by separating them from each other forever.

The problem is, Kazuma STILL thinks that he’s always in the right. He only confessed with “vague words” and yet seems perfectly certain that Bishamon–who has never exactly been a pro at picking up signals from others–totally understood him and rejected his feelings of amorous love.
It hasn’t occurred to him that perhaps his vague words just didn’t reach Bishamon the way he wanted them to, and that she doesn’t understand that he loves her in a way different from just a normal god and shinki loving comradeship. That perhaps all this time she did have more love she could have given, if only she’d known it was needed or wanted. He’s her guidepost, but in this he didn’t guide her.
Maybe Bishamon does know, and maybe she did reject his romantic feelings. Maybe he’s right and gods really can’t love humans. (Kofuku and Daikoku are over here in the corner waving frantically though.) OR… MAYBE Kazuma is being a giant freaking idiot like always and leaping to conclusions he should never have drawn based on incomplete information and “vague words,” and passing his pain and suffering on to others, mistakenly believing he’s doing the right thing while actually just screwing everyone else over hardcore.
One of these two things somehow seems more likely than the other…

Not sure why anyone is freaking out about Hiyori’s tail? He missed (he was only trying to scare her anyway, it seems pretty clear, because if Kazuma can hit lightning in the sky, I think he could hit a target five feet in front of him)–the white stuff around her tail is snow spraying off the roof.

ANDDDDD here we go!!
So Hiyori admits she’s in love with Yato, finally. AT WHAT COST. I hope this didn’t really take anyone by surprise, since it really has been in the works for some time now.
I actually discussed how I felt Hiyori’s feelings were changing and how she was slowly coming to accept her feelings for Yato more than a year ago, in this post: http://echodrops.tumblr.com/post/164900791646/ive-read-different-opinions-on-whether-yatos
Adachitoka did a fabulous job of building up to this moment, very slow, incremental changes in Yato and Hiyori’s relationship. From the moment that Hiyori flashes back to here, where she told Yato she wanted to spend more time with him, to the Capyperland crisis where she envisioned Yato beside her instead of Fujisaki, then actually going to Capyperland and telling Yato that she wanted to be with him longer, to the scene where she allows Yato into her room while she’s undressed, to calling Yato her family to Fujisaki’s face, to seeing her plaque tied to Yato’s–making them soulmates–and NOT rejecting that or demanding Kofuku untie them… I mean, especially that last one.
Like I mentioned last year, Hiyori has spent at least a couple in-series weeks now living under the impression that she and Yato are now soulmates, and the moment she didn’t freak out about that and demand to be set free from that just screamed it to me that, deep down, she was okay with the idea of being in a relationship with Yato, even if she wasn’t quite willing to express her feelings out loud yet.
But now she’s over it. And theoretically, things should get better from here.
EXCEPT LOL JK, IT’S NORAGAMI; NOTHING’S EASY.
Yato and Hiyori are gonna have to WORK for their happy ending.
But you know what? I think it’s coming. Now, more than ever, I think a happy ending is coming.
Calm down. Deep breaths. Have faith.