This episode clearly hints at how the problems of this arc will be solved, and I loved the strong emotional moments with Shaula and of amnesiac Subaru despairing over how he doesn’t have the competence to solve the problems at the tower.
The episode starts off with the group wondering how Roy could be Reid Astra, and after Reid protests that he’s himself, Julius explains that Roy had eaten Reid, but Reid’s memories/ego took control with those very memories/ego drawing out the form of Reid’s body, formally making this the third concept on how Rui’s words in Ep. 74, “Memories are what shape a person.” were used in the story of this season with the first being Subaru having his memories eaten resulting in him losing a core aspect of his being and with the second being how those who had their memories or both their name and memories eaten possessed by Lye Batenkaitos and Rui Arneb. When Julius asks how Reid how he could be confident that he’d take control, Reid merely answers he didn’t do all that much thinking, just that he didn’t expect that a snot-nosed kid could truly eat him up and that he’s mostly definitely himself. Emilia tries to talk him down, but Reid merely replies that he’s living up to the principle of the exams, meaning he’s going to test them nonetheless.
The group then loses to Reid offscreen, and Reid again, just like in Ep. 72, says that the group should’ve at least tried some petty tricks and not play by the book, which he’d pointed out again and again to Julius in that episode from the first part of Season 4. He then says that it’s not all about numbers, pointedly asking Julius for his answer, and Julius asks why Reid’s fixated on him with Reid turning that back on him, and that it’s Julius and amnesiac Subaru who’re fixated on him, which is very generous of Reid to give such advice since in saying that’s not all about numbers, he’s telling them they should take the Emilia approach and request a certain condition for them to have his approval, which I believe is yet another sign that Reid’s on the side of Echidna, Satella, and whoever else is involved from four hundred years ago since he’s being ever so nice with his charity comments. Reid also directly tells amnesiac Subaru he doesn’t know how to swing a sword for shit, and when amnesiac Subaru protests, Reid notes it’s not about his physical inability to wield a sword properly, meaning it’s probably about his inability to offensively use his whip, his not being able to use team spells with Beatrice, and his not using his Authorities properly, such as how he usually resorts to using Invisible Providence offensively, meaning he’s hinting to him that one of the keys to success of this Pleiades Watchtower arc is regaining his memories.
After he wakes up after looping, he gives the group instructions offscreen and audibly apologizes to the others by himself as we get cuts of what the others are doing since he intends to ask Shaula about the secret fifth rule for those who’ve partaken in the exam for access to the Great Pleaides Library. Before doing so, questions he asks her includes whether she’d die for him, which is a yes, and whether she can transform into a giant scorpion, which is also a yes, but her phrasing of it not being exactly like that indicates she was originally a scorpion mabeast to begin with. When she says that there’s no fifth rule, he says her name sternly, and she just won’t answer ’cause she’s waited four hundred years for him to return since while the group has been around for four days, he was unconscious for two of them, and she’s just not satisfied with that at all since her feelings of devotion and longing for his affection are at the very core of her being, which indicates Flügel had created Shaula, probably alongside Daphne, the Witch of Gluttony, since she’s necessary to create mabeasts, to have extreme dedication toward him, and the reason Shaula was made this way was likely to ensure that she would stay inside the Pleiades Watchtower for as long as she did, possibly as part of the grand intervention I propose that started four hundred years ago. If you recall, I had talked about how Shaula carrying Patrasche was an allusion to Greek mythology’s Titan Atlas’s punishment of carrying the celestial sphere, which consists of the night sky for my write-up of Ep. 70, and Amnesiac Subaru even calling her the star guardian of the tower as for why she should tell him about the fifth rule due to the tower being in danger, which backs up that analysis very well: Re:Zero Episode 70 (Season 4 Episode) Analysis + Important Details – Thorough Watch
As telling him about the fifth rule would mean he knows how to clear the exams, Shaula really doesn’t want to happen since it’d mean her time with him comes to an end, and I’m thinking there’s possibly more than one meaning to this as Atlas’s punishment was eternal, so Flügel may have told her that after the completion of the exams that she’ll either die or never be able to remain in human form ever again, meaning the punishment of human-form Shaula is eternal, much like Atlas’s, meaning she won’t ever be able to stay by her beloved master’s side again, not joining the Emilia camp at the end of the season. When she asks whether amnesiac Subaru hates her for lying to him, he says that he could never, and then probably ’cause of Reid leaving his floor, Shaula slowly starts to become a scorpion mabeast and asks amnesiac Subaru to promise to kill her before the transformation is complete, and he basically lies to her to learn what the rule is, which is that it’s not forbidden to destroy the exams themselves, and then he throws himself off the tower as Shaula herself jumps off hoping to save him with him probably doing this since her fierce loyalty to him can probably slow her transformation and limit her suffering to an extent while preventing him from staining himself with Shaula’s blood, which is very much a greedy thing to do, a callback to Rem telling him to save everybody, showing just how much Rem’s Stand Up moment resonated with him. And I don’t know if this is correct, but with how greedy he felt in that moment, maybe it’s the precursor to him using one of his Authority of Greed abilities better at the end of the episode.
What may have made it even more painful to Shaula is that there are clear differences between men and women socially even when accounting for individual differences between humans as well as mental health conditions/disorders with women innately needing more social interaction than men do. Maybe carrying Patrasche itself was easy, but waiting for hundreds of years as the Keeper of the Pleiades Watchtower with no sign on Flügel was the worst sort of punishment for her given she said in this episode (Season 4 Ep. 15) that her feelings for Subaru are what make her who she is, meaning a sense of deep devotion and longing for his affection is at the very core of her being.
But, yeah, it’s gutting for Shaula to perhaps only get two, maybe three days, with Subaru depending on how long it takes to solve the obstacles of this arc. Shaula’s someone who deserved much greater happiness than this. I can see why she didn’t want to tell Subaru about the fifth rule about destroying the exams not being forbidden as in here eyes it’d markedly cut down on her time with him given she doesn’t know just what sort of threats the tower will face.
He then wakes up again, and he tries going to Reid alongside both Julius and Beatrice, and Reid apparently didn’t want to be eaten but changed his mind, allowing for the battered Roy to eat him, and given Roy only placed his right palm on Reid, it meant that he’d only eaten his memories since placing the right palm on somebody before licking that same palm (offscreen in this place or saved budget by not showing it) as shown here is meant for eating memories while doing so for the left palm is used for eating somebody’s name, which is the world’s memory of that person’s existence, which Lye tried to do to amnesiac Subaru in Ep. 8 but couldn’t, and doing that for both palms is how one eats both a person’s name and memories, as shown by Lye in Ep. 66 with how he’d erased three members part of the White Dragon’s Scales mercenary group. I don’t believe that Reid genuinely changed his mind though and that he has some sort of pact with Echidna, and she’s feeding him instructions given how charitable he has been with the group and how he didn’t allow himself to be eaten before now, which greatly helped the group as it would’ve been Mission Impossible had he allowed it to happen sooner. After Roy says that there’s something wrong with Reid as he struggles for control, Reid says that there’s nothing wrong with him since it’s eat or be eaten as that’s what it means to live. So Reid’s appearance before wasn’t a real physical body but some fake physical vessel, and now he actually has a real body due to using Roy’s being to manifest his body. He says that amnesiac Subaru creeps him out, probably ’cause of his determination to go on despite his weakness. Reid then easily defeats all of them.
Amnesiac Subaru then has a montage of deaths, being able to confirm the mabeasts storming after the tower are coming after him, probably ’cause the Sin Archbishops of Gluttony ordered them to, ’cause when amnesiac Subaru or Subaru talks about Return by Death, the Taboo, even if in another dimension, more witch miasma comes from him, and ’cause Satella/the Witch of Envy are angry due to the Gluttony trio knowing about Return by Death, and that’s why the Witch of Envy keeps appearing.
He then trembles after all his failures with the group leaving him ’cause of how he’s clearly taking on too much by himself and needs to compose himself. After wallowing in self-defeat, he then again uses of of his Authority of Greed abilities and sees himself as a white sphere at the center of the library and more spheres/auras come into view, and he also sees another white sphere that’s flashing as well as an irregularly-shaped yellow thing. He goes over to the flashing white sphere, which he learns is Natsuki Subaru’s Book of the Dead, and he can fully read it as it’s spelled in kanji, indicating that my speculation about Books of the Dead being Echidna’s creations may very well be correct since if this book had been read in the language of the fantasy world, he wouldn’t have been able to read that since he’s lost his memories of his time in the world, and since Echidna has seen all of Subaru’s memories up until Season 2 in Ep. 29, Parent and Child, she’d know of how to write Natsuki Subaru in kanji, suggesting Echidna has full control over the Books of the Dead, which would explain the cognitive obstruction in how only those who’ve met somebody can read that individual’s Book of the Dead and why Reid’s Book of the Dead connected to the Corridor of Memories, meaning I was right originally and not ’cause the Gluttony trio could seize control of the recollection of Books of the Dead of those whose memories they’ve eaten.
I’ll now talk about what the key to “destroying the exams” is as I believe unravelling the magic behind the exams would constitute as “destroying the exams”, and we’ve seen Beatrice and Subaru do this with the EMT spell that nullifies magic within the space the spell covers up since it nullified the Sand Time and Shaula’s needles in Ep. 68, which is how the group fell to the underground paths. Thus, the irregularly-shaped yellow thing could be the magic behind the tower’s exams, and if Beatrice and Subaru use the EMT spell on it, it could “destroy” the exams, leading to them no longer needing to be pass the exams. After unraveling the magic behind the exams, amnesiac Subaru may be ready to confront Rui again and seize back his memories so that the Witch of Envy stops rampaging in the tower, which is crucial to solving the five obstacles established from the last episode’s title, which are the Witch of Envy, Reid Astrea using Roy to gain a physical form, Lye Batenkaitos, Rui Arneb, and the rampaging mabeasts. Even if this episode didn’t really have all that much to talk about, I believe it was a keystone episode with laying out the important pieces.