One love story in Hunter x Hunter could be between Gon and Killua. Their friendship has strong undertones of love. They care deeply for each other, always looking out for one another during their adventures. Killua is willing to go to great lengths to protect Gon, and Gon's unwavering trust in Killua is a form of love in this harsh world of Hunters.
The Hunter x Hunter manga is unfortunately not complete. The author has faced various issues that have led to intermittent breaks and an unresolved storyline.