Who is Bijoy from Sister of My Heart and what is their importance?

Bijoy is Anju's father. Before he leaves for his treasure hunt, he asks his wife to raise his child in the traditional Indian way if he does not come back from his trip. Although Sudha assumes her father forced Bijoy to go on the trip with him, she learns that Bijoy wanted to go and find his own ruby. Bijoy also pawned the family's paddies and their country house in order to finance the trip. When Bijoy tries to buy Gopal's family home back for him, he receives a letter stating that Gopal's father did not have a male heir. Although Bijoy believes Gopal has been lying to him, he still goes on the adventure trip with him. Bijoy learns Gopal's real story on the boat before he passes out from the drugs. Because he cannot swim, Bijoy dies when Haldar throws him overboard.