Apple

Organization
the ‘adventurers of origin’ is a words that denote the members of Apple Name Aznoval, Rokuya, Ginebia, Haku Mokuren, Hitsuna; it was form with around 10 people, and their names are absurdly popular and there’s a lot of epics and anecdotes about them. Rokuya-san has left numerous stories of being a chivalrous thief as an assassin.

they are all immortal

Encountering
Hokuto and Shii both consider them to have ‘outrageous’ ability, and has the looks of a dancer and the other a sister.

Osakabe Iroha encounter two women who saved her from treacherous aventures and Who she greatly admire

Misumi Makoto first met Rokuya Who put a knife to his throat in a way of greeting and met again on the 10th floor where he basically is surprised by his late blooming nature and talked about the events from the past and present

Adventurers of Origin A bilities
It is possible that all the members have this ability Guild skill, activate. Recast Overwrite breakpoint re-register The exact list is unknown for all its members class it looks likely it follows all fantasy-based like games class systems
 * Magician
 * Dancer
 * Priest
 * Knight
 * assassin