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