Physical age of the scarlet sisters?

[MysticSquare]

I know it's a kinda silly question, but I've always been curious about it.

Chronologically, Remilia is around 5 years older than Flandre, but what about their physical/mental ages? Some people say they're the same age, but if we consider that vampirism happens similarly in Touhou as in other folklore, Remilia would have gained immortality first, and then Flandre later. I think it makes more sense for Remilia to be "biologically" around14-15 years old and Flandre 9-10.

What do you guys think?

[Branneg Xy]

I know it's a kinda silly question, but I've always been curious about it.

Chronologically, Remilia is around 5 years older than Flandre, but what about their physical/mental ages? Some people say they're the same age, but if we consider that vampirism happens similarly in Touhou as in other folklore, Remilia would have gained immortality first, and then Flandre later. I think it makes more sense for Remilia to be "biologically" around14-15 years old and Flandre 9-10.

What do you guys think?

To a certain angle  extent they are quite similar with each other,

From https://en.touhouwiki.net/wiki/Perfect_Memento_in_Strict_Sense/Vampire https://en.touhouwiki.net/wiki/Perfect_Memento_in_Strict_Sense/Remilia_Scarlet
"(Remilia Scarlet) Her appearance and behavior might seem childish, but she has actually lived for more than 500 years and possesses amazing physical powers, as vampires do.
   She's short and looks as a little girl under the age of ten, but she has wings with a span wider than her height, and by looking at her silhouette, she may seem quite large.
   Her ego is large as well.
   Her actions are similarly childlike, and combined with her amazing strength and inexhaustible curiosity make her a fearsome devil that may explode at any time.
plus "https://en.touhouwiki.net/wiki/Perfect_Memento_in_Strict_Sense/Flandre_Scarlet
" (Flandre Scarlet)She has unusual seven-colored wings, and her hair is a light blond color, but her build and apparent age are similar to that of her older sister, Remilia. "

However there also more details and insights to be - please go kindly and warkly ahead - coherently gathered,  presented, complemented the limit of "Akyuu partly-unreability and her lower rate of updates and insight due to her more human-focused and oriented point of view and approach,  which was even more pronunced in the previous 'Daughters of Are-Hieda Lineage "

[CyberAngel]

Remilia definitely looks pre growth spurt so she's probably 10-12. That would make Flandre 5-7, which does fit her much more immature personality. I also remember something about younger girls in Japan not allowed to wear longer skirts so the implied physical age difference is definitely there.

[degradingwindow]

Basing ourselves off these emails ( Specifically the part about the character's height). I'd say that Remilia is around 12-13 while Flandre is probably just a few years younger at around 10-11.

[MysticSquare]

Remilia definitely looks pre growth spurt so she's probably 10-12. That would make Flandre 5-7, which does fit her much more immature personality. I also remember something about younger girls in Japan not allowed to wear longer skirts so the implied physical age difference is definitely there.

Don't, dude, don't make me think Flan is just a 5 year old when Chrino looks younger than her imo... D: Remi kinda looks like a child in EoSD but in IMP she looks like a mid-teen to me.

Basing ourselves off these emails ( Specifically the part about the character's height). I'd say that Remilia is around 12-13 while Flandre is probably just a few years younger at around 10-11.

What about the 5 year difference? Well, considering ZUN is a jojofag, I wouldn't be surprised if he also likes to play with characters appearances as well as their ages. Like how Jotaro is 17 and looks 30 and Koichi is 18 and he looks like a little kid, so why couldn't Koishi?
So I guess it could be totally possible to Remilia to be "biologically" 5 years older than Flan and yet have a similar phenotype.

[CyberAngel]

Don't, dude, don't make me think Flan is just a 5 year old when Chrino looks younger than her imo... D: Remi kinda looks like a child in EoSD but in IMP she looks like a mid-teen to me.

I went "kyu" and it went "boom"

[Branneg Xy]

Don't, dude, don't make me think Flan is just a 5 year old when Chrino looks younger than her imo... D: Remi kinda looks like a child in EoSD but in IMP she looks like a mid-teen to me.
What about the 5 year difference? Well, considering ZUN is a jojofag, I wouldn't be surprised if he also likes to play with characters appearances as well as their ages. Like how Jotaro is 17 and looks 30 and Koichi is 18 and he looks like a little kid, so why couldn't Koishi?
So I guess it could be totally possible to Remilia to be "biologically" 5 years older than Flan and yet have a similar phenotype.

Certainly, the fact Touhou Vampires do "forever maintain and are trait-noted their earliest around teen youth", est. around pre-teen-to- earliest-and-early-teen teen 9-10-to-11-12-13,small grow could still possible in-between because there are partially corresponding variabilities  is a Canonically Coherent fact which is also linked by hints and notes with " variable prudence and caution corresponding to her(Remilia's but also hinted Flandre's) variability about eventual increase and spikes about engagement, interest,curioexctiment but also eventual more reckless provocations and blow-away response"

All this without forgetting their outer development is showed by their Outer Primary Key Vampire-Youkai Trait...
Their Wings "Regular Unfurl/Furl" for Remilia, but for Flandre it would be a "more Personalized,  Adapted, Atypical, Irregular such as her Atypical Wing-form", more clearly and bettef canon-quotes-and-images linked is the Development of their Wings, Wing-Span, Wing-Body Silouhette

This results in both a part of Youkai's personality maturity, one of maturity and one in development which is however mostly-separate from authority, role, attitude, knowledge and experience

[DeltaSilver64]

I personally see Remilia mentally standing as an uppity teenager around 15-17 who thinks she's more mature than she actually is, meanwhile Flandre is mentally 12-14 who's more comfortable with acting childish.

In short: Flan's the 12 year old cousin at the family reunion cooped up in her room playing her dad's copy of GTA V, and Remi is trying every scheme to sneak in and talk about grownup things at the grownup table, like pretending to know what taxes are.