Describe the characters in the short story "The Lagoon"Who are the characters? What are there involvement in the story?

Conrad's story, The Lagoon is the
story of a Malayan native Arsat, his brother, and Arsat's beloved Diamelen. Arsat and
his brother were two young men having a lot of courage and endowed with a racial spirit
of adventurism. They were the sword-bearers of their king. Arsat fell in love with a
woman called Diamelen, and desperately desired to possess her. Diamelen belonged to the
noble chief Inchimidah, and Arsat became impatient, swept with irresistible passion for
her. Arsat's brother gave him the support to elope with the woman, and himself held the
king's men at bay with his gun so that Arsat could escape to safety. Arsat chose to
escape with his beloved when his brother shouted for life being overpowered by the
pursuers. Ever since Arsat lived with his Diamelen beside a weird-looking lagoon in the
dark forests, but the death cry of his brother kept ringing in his ears. Arsat suffered
from a sense of guilt, a deep sense of moral default. Arsat's beloved also died of some
strange disease, and he was all alone, remorseful and forlorn, searching for a light in
the midst of the darkness of his soul.

Another important
character in the story is that of the white man. Conrad has employed the device of a
frame narrative, the narrative of the white man's journey to the jungle habitat of his
old friend Arsat and his stay for the night so that Arsat's story can be told as a
narrative within the frame narrative. The white man thus chiefly serves as an outer
narrator, an observer and a listener, a sort of choric presence, a priest-like persona
hearing the cofession of guilt.