Play house fatality
Kirua dated Gon to go fishing in the national aquatic park. But, Kirua's true intention was to tell Gon a recently revealed family secret.
Kirua: Gon, I have something to tell you.
Gon: What is it, Kirua?
Kirua: That is… I mean… You really won't regret our marriage?
Gon: Baka! Of course! Even if it means we'll have to fight for the gay's right, I will always stay by your side. *kiss* And besides, our parents are gay, too.
Kirua: But what if we are not only gay? What if… we are more than that?
Gon: *blink, blink* What do you mean?
Kirua: I mean, did you notice something strange when you told your parents that you are engaged?
Gon: Hm… My dad went mad because he thought I was engaged with Hisoka. But after I explained to him, he said "Don't forget to remind me to assist your marriage."
Kirua: What about your mother's reaction?
Gon: Hm… He wasn't at home.
Kirua: I see… My father's reaction was strange.
Gon: What did he say?
Kirua: He wished me happiness, but from the look of his face, he didn't mean it at all.
Gon: *stand up* Then I shall see him and talk to him. Maybe he'll accept me.
Kirua: *pull Gon down* It's not that the problem.
Gon: Then, what is the problem?
Kirua: *You know our parents knew each other before.
Gon: *nod* Ah-huh.
Kirua: You know that Kuruta Clan and the Spiders were once enemies.
Gon: *nod* Ah-huh.
Kirua: And you know your mother and my father were once enemies.
Gon: That's what I was talking about. Your dad probably think that you cannot find happiness if you married his enemy's son.
Kirua: No! If it were only a problem of hatred, it wouldn't be this complicate.
Gon: I don't understand.
Kirua: *pause* Yesterday, my father told me everything. *pause* Your mother was the last survivor of the Kuruta Clan after the Spiders attack. Do you know why?
Gon: Hm… No.
Kirua: Because the Spiders' leader, my father that is, kidnapped him. Your mother was locked, tortured and raped. Before your father came and saved him, he gave birth to a child, which becomes the first child of Kuroro Lucifer.
Kirua: Gon, I'm sorry to shock you like that. Our marriage is tomorrow, so I don't want you to become my wife without knowing the truth.
Gon: I don't believe it. Why my dad was so happy when I told him? *cry*
Kirua: Your father was a lunatic! He fought unarmed with my dad and the next day, he forgot his opponent's name.
Gon: Yeah, right. *stop crying*
Kirua: Gon, it's still time if you wish to cancel our marriage.
Gon: Even if we are brothers, even if it means we'll have to fight for the gay and incest's right, I will always stay by your side. *smile*
Kirua: *smile back* It looks like we'll really need to fight for the gay and incest's right.
Just in case you didn't match up the characters:
Kuroro: Kirua's father
Leolio: Gon's father
Kurapika: Gon's and Kirua's mother