[LROlsson]

Originally Posted by tsunade666

Of the old cast. Who are the ones who shown more prominently and has an active role in the game or story?

Spoiler for Old Characters:

Most active is probably Karura and Touka, but that isn't saying much.
Karura is mostly in the hidden room at the top of the inn, where Haku goes twice and Kuon once.
Touka is working as a maid, and tries to avoid people who know her as much as possible like Kuon, Aruru and Kamyu.
Karura and Touka also appears when Haku need to sneak into the palace and shows a hidden passage from the inn.
Kamyu and Aruru appears a short while as diplomats from Tuskuru that comes to Yamato a short while before Yamato invades Tuskuru.
Aruru also appears in the post credit scene and uses Mukkuru to kill one of the Kages that tried to capture Kuon.
Kurou and Benwi appears during the invasion of Tuskuru, with Kurou fighting Haku and Benawi fighting Munechika.
Dori, Gura and Oboro appears three times.
One time Dori and Gura alone are talking with Kuon in her room, and later Oboro is talking alone with Kuon in an alley. Second time the three of them is talking with Haku without Haku knowing who they are. And the third time they meet with Kuon in the post credits scene and presumably takes her home to Tuskuru.
Urutori is mentioned once, when it's told how Touka "kidnapped" her and took her to Yamato for a short while.
And Eruru is simply mentioned as one of the mothers who taught her medicine.