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Gilbert Cocteau

"Gilbert Cocteau, you were the greatest flower to ever bloom in my life.

In the faraway dreams of youth, you were a bright red flame, blazing to fiercely..."

Official Art

All this photos are from the manga or artbooks and such, so... All credit to Keiko Takemiya, I guess.

Someone found an ancient (signed) Kazeki notebook with them wearing traditional clothing.
This image somehow kind of reminds me of Mephistopheles... And when I see Beau's side profile I always think of that Faust illustrated edition by Harry Clarke, they look so alike. And because of that, everytime I see this image, I always end up thinking of Auguste Beau...

Manga

Same here! All credit to Keiko Takemiya.

Baby Gilbert!
"Money doesn't matter if you can't buy what you want." Roughly translated...
Liliath and Gilbert making fun of each other using 'miss'. In XIXth century, using 'miss' with a grown woman would usually imply she was a prostitute. It could also mean how both of them were forced to grow up young. Gilbertscocteaus on Tumblr.
Gilbert insulting someone in french...

Other art I liked

Everything should be linked back. If not, it's probably from one of the users I mentioned in the main page.