One thing I always found intriguing about Re:Zero's cast, is how virtually every single character embodies an attribute of Subaru. You could very well conceptualize Re:Zero as Subaru's dream with every character depicting a projection of his subconsciousness.

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Because in a way R:Z's story unfolds like an internal- dialogue or conflict between the subpersonalities within Subaru's psyche.

For instance; Subaru's conception of Emilia is a reflection of his ideal self. Emilia represents (to Subaru) everything he wants to be &

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everything he loves about himself. Whereas Petelgeuse is a reflection of Subaru's worst self. Petelgeuse represents everything Subaru hates & therefore suppresses about himself. - So Subaru fighting off Petelgeuse & saving Emilia in an archetypical structure

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is figurative of Subaru's internal struggle to overcome his inner vices & to nurture & achieve his desired self.

Or to present a different example; Pride is an attribute that defines Subaru & it's also an attribute reflected within Julius & Patrasche (the Earth Dragon).

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A beast such as Patrasche, a breed known for its extraordinary pride, accurately embodies Subaru's rather simple & complacent pride, as they take an immediate liking in each other. Whereas Julius's pride is more majestic & dutiful, it's the well-earned pride of a knight -

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something Subaru resents out of envy, as he's visibly hostile towards him.  - Julius & Patrasche symbolize the discrepancy between how Subaru wants to be seen as (Knight) & what he actually is (Beast).

Or another last example; Escapism is an idea deeply explored in R:Z -

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it's represented in various ways in multiple characters to reflect upon Subaru. Beatrice embodies an overreliance on escapism resulting in complete avoidance, a state Subaru finds himself in in (e.g.) Episode 7. Whereas Rem manifests a total lack of escapism resulting in

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a pathological sense of duty, a state Subaru finds himself in in (e.g.) Episode 8. - Beatrice reflects Subaru's tendencies to escape from unpleasant truths & responsibilities, while Rem reflects Subaru's ambitious sense of duty (as a hero).

& these are just a few examples.

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Most characters are more or less an extension of Subaru's self. & this concept portrays the idea, that there's no difference between individual & world - a metaphysical & psychological truth highly relevant to Subaru's growth & the themes & messages that transpire from it.

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