I think, this isn't really a meta-discussion on otaku culture, or that he regrets that they've broken up. Those are certainly parts of it, because he certainly is an otaku and he really does want her back. But, the thing is, this is about how people perceive media and how they base themselves around it.
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Meme represents lust, naturally.
Hana is herself: A loving and innocent girl.
Masked Hana is what she believes Syu wants her to be which is why this version of her is completely sexual.
Transformed Hana was once Masked Hana. But instead of being an alter ego, she became the main ego.
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Now,I'll explain my interpretation using as many timestamps as possible so I can be as through as possible.
1:30 - 1:50
The video opens up and Syu is awake and lying in bed. We also see a nice view of Syu's room. It's a mess. A lot of anime merch, with figma pieces lying around on the desk as well as an image of Meme. For some reason, Syu is in a daze...
1:51-2:35
Meme brings us into her little world and shakes it like her mother gave her and isn't afraid to show it. Syu is more than thrilled since he has a "nothing can go wrong," type of smile on his face.
At this point, it's pretty clear that the reason why he's dazed in the real world is because he's busy fantasizing about Meme.
2:36-3:18
Meme, brings us a little deeper into her world and we're immediately faced with a Masked Hana watching Meme's new and very suggestive performance. During said performance, Hana reveals herself to Syu and he's shocked that she's there. The scene reaches a climax (in more ways than one) by having Masked Hana mount Syu and squish him with her breasts.
Now, it's weird to say that he's surprised that she's there when it's his fantasy. However,it is possible for outside influences to, well, influence what kind of dream you're having. So, Hana has more than likely decided to stop by which is what killed the party.
3:19-3:50
Syu regains consciousness only to be greeted by Masked Hana yet again who somehow manages to come in via digital photo frame. And like last time, he's shocked to see her. So shocked in fact, he attempts to get away so she doesn't pounce him. He fails due to how cluttered his room is and she moves towards him. She notices his penis, looks at him sexually, and projects a ton of fluid from her mouth to his. Syu goes unconscious.
The beginning of this part is sort of interesting. In the last part I said that Hana must be stopping by, which she did. But it's the way the shot was done is the interesting part. Instead of him opening the door, or her already being there, we see her come through the picture frame. Doing that feels like she's following him. She seemingly snuck into his fantasy possibly through the frame (since that's how we the viewer got there) only to come out of it the way she came.
But besides all that, the scene also suggests that she put his semen in his mouth after she gave him a blowjob, poor guy. With the look on her face it was on purpose too. Pretty gross.
3:51-4:24
This part begins with a zoom into Hana. The more it zooms into Hana, the more her face deteriorates into just that of a skull. Then we see a shot panning up Hana's leg all the way up to her nipple, looking lost and confused. Zooming through his eye, we see an unmasked Hana, and zooming past her we see Hana way back in the distance. Looking through her eye we see a pair of breasts and a wandering eye. Said eye sees 2 Memes suggestively posing and that the photo frame is that of Meme. Although, the photo frame changes to that of Hana and Syu together.
So, there is a lot of things going on here. For one, with the way Hana began to smile as the camera zoomed in on her revealing her skull, it suggests that she was slowly becoming the masked version of herself. That said, we're actually looking inside of Masked Hana at this point. So, we're actually seeing a pan up of Masked Hana's body with Syu just standing there, looking lost like he has nowhere to go. This means that he doesn't know how or where to "get started," in terms of touching her. The fact the fist thing he sees is the Masked Hana and not Hana herself with her all the way in the distance, means that this masked variant has been showing up quite a bit lately. More so than the real her. The pair of breasts and eyes reinforce that we're seeing through Hana's perspective, which is that Syu is paying more attention to Meme than her. When in fact, Syu was always paying attention to her. Just the old her. Not this new sexually charged persona version she's wearing.
4:25-5:14
Syu begins to think about the past, specifically on when they broke up and walked out on her. He wears a sorrowful expression and tries to go toward her only to fall over. It turns out (un)Masked Hana was eating him. She leaves only for her other self to come up and kiss him. This reawakens Syu along with the good memories they had together. Hana then transforms and leaves.
I believe the reason why Syu broke up with Hana is not because anime>everything, but because he was falling out of love with her. Or at least, he doesn't like the Masked Hana version of her. He doesn't know what to "do" with her and is intimidated by her. So he walks out. In turn, on one hand Hana is upset. She wants something done to him which is why the video shows her (un)Masked self ravaging him. He's being eaten alive at the very thing he unintentionally created. But, on the other hand, she still loves him deeply and wish they could still be together and kisses him. Regardless, she transforms and is outright the very definition of a vixen minus not being a fox.
5:15-6-27
At this point, Syu also remembers the Masked version of her and yells. His body resembles and is now wearing some sort of power suit and a gun taking down Meme as he goes. Then we see the Transformed Hana phazing out with Hana phazing. Hana is free falling with Syu trying to catch her. Try as they may, they were only a fingertip's away from each other but, Hana falls into a pitch-black abyss allowing the Transformed Hana to reawaken.
It's funny to see that Syu's idea of what a "White Knight" looks like is an Evangelion rip-off title Noilegnave. But, I digress. The fact that the transformation was having trouble keeping it's form together means Hana is fighting back.
6:38-7:55 FIN
Here we have it. The grand finale. Syu vs an army of Meme and a Transformed Hana whom are on a Battleship. To cut it short, ultimately, Syu can't keep up and is blown to bits. He's surrounded by Meme and is kissed by the permanently changed Hana and is eaten.
I'm pretty convinced that the interior of the battleship is supposed to be a vagina. That being the case, it's more than likely s metaphor for a new Hana being born which is where the picture frames comes into play. When it was whole, Hana was all there still. When it cracked, she was absorbed by her new self, and when it was shattered, she was completely gone. The reason why Syu initially refused the Transformed Hana's kiss only to go into it because to him, it felt like Hana - the Hana he knew. But in actuality, it wasn't. He was being tricked. She did that to give him false hope that Hana was still there. In the end though, the Transformed Hana ate him, or in real life terms, more than likely got back together with him just to dump him.
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So what is the story behind this? Well:
Due to all of the sexual anime Syu watches, Hana took that as a clue for her to be like that too. As such, she creates this sexually charged alter ego. But, he doesn't want that at all. The mask in itself is a part of that. It's to block the face he doesn't want to see because this Hana isn't the one he loves. With her becoming increasingly sexual towards him, he believes she stopped being who she was and she changed too much for him to take causing him to walk out and her crying. On one hand Hana is very upset. She changes herself to fit what he likes to see only to be dumped on. The reason why it shows her eating him is a way of saying she wants to do something to him; she wants revenge. But, simultaneously, she still loves him a whole lot and even kisses his dismembered state. When he decides to come to her rescue, he keeps his lust under control. This makes Hana come back for a brief moment only for the Transformed Hana to take reign and completely takes over and he gives up into this lust and this new Hana. This new Hana tricks him into believing her old self still exists when that isn't the case and dumps him. The fact the video loops means that Syu hasn't given up yet and will try and get her back.
This ties in with media perception because Hana tried to emulate something Syu kept looking at and fantasized over. If he didn't fantasize over it, or just viewed it less often, she wouldn't have gone to such lengths. Instead it caused a friction in the relationship and broke up over implications that were created over the type of anime he watched.
