kurapika is committed to destroying himself from the inside, the fire that that threatens to consume his soul. he continues to chip away at his lifespan to pursue avenging his clan. that is his lifeline. it grounds him to his world. in order to remain committed to his aspirations, he isolates himself, rejecting any form of human comfort for he is a gilded weapon that needs no home. he must be a steadfast soldier with few attachments in order to retrieve all of the eyes of the kurta clan
then there's leorio. the healer not only just as as doctor but with the love he shows. his effervescent kindness that pulsates out of him, bathing one in a warm blanket. he does after all have "the kindest heartbeat of yorknew city." and that is because beneath all those layers of practiced selfishness, he at his core is selfless.
leorio will never give up even if kurapika scorns him and continues to ignore his calls. his outstretched hand will always be waiting for kurapika to interlace his finger's with his own. he cares. he will stoke the hearth and wait for him always.
no matter how kurapika tries to destroy himself and reject the world, leorio remains. how could he leave him? kurapika needs someone. he remains steadfast in his patience and loves him in spite of it all.