These are two characters from the manga/anime Barakamon. The righteous looking girl is Miwa Yamamura and the other is Tama Arai.

This is what they're saying in Japanese

Miwa: 日本の夜明けぜよ！

Tama: 龍馬 オタク⁈

In romaji (roman characters)

Miwa: Nihon no yoake zeyo!

Tama: Ryouma otaku?!

In English (not exact)

Miwa: T'is the dawn of Japan!

Tama: A Ryouma otaku?!

Sakamoto Ryouma was a very prominent person in 19th century Japan. And the "zeyo" is from the Tosa dialect, though "zeyo" isn't really used much.