Recap:
Hiei focused on the girl as well. She smiled lazily.
"This is Kei. She escaped from demon world shortly after you three left."
A demon, huh? That explains her immense presence.
"Um…Mr. Hiei…I know you just got back…but I have to know…did you find my brother?"
He stared into the eyes of his sister. "I did…but you may not want to know."
"Oh course she'd want to know." Kei said. "It's you, isn't it?"
Part 2
Hiei gasped and turned to the girl called Kei. He glared at her.
"What, was it a secret?" she asked, a hint of mischief in her eyes.
"HAHAHAHAHAHA!" Yusuke was rolling on the floor laughing. "She beat you to the punch Hiei!"
"Indeed she did." Kurama smiled.
"WHAT!" Kuwabara looked between the three of them. "Yukina's long lost brother is HIEI! And Urameshi, you knew!"
Yusuke smiled guiltily. "Well, I really wanted to tell you…but…"
A strange sound came from Yukina, silencing Yusuke. It was half sob half scream. "Mr. Hiei, you-you are my brother?"
Looking into his sister's beautiful eyes, he grudgingly admitted to himself he was glad she knew. Maybe he would forgive Kei. "Yes."
Tears fell from Yukina's eyes, turning to sparkling jewels as they hit the ground. Suddenly she jumped on Hiei, hugging him tightly. "Why didn't you tell me?"
Hiei found himself controlling the impulse to spill the story with everyone in the room. "I couldn't."
"Ahh, so it was a secret." Kei said, sounding more happy than guilty. "Oops."
"Oh save it Kei. You knew perfectly well it was a secret." Kuwabara said.
"How is that?" Kurama asked.
"It's one of her powers. When she meets someone their biggest secret is revealed to her." He grinned. "It didn't work with me of course."
"What makes you think that?" Kei asked in mock curiosity. "You're biggest secret is that you have a crush on Yusuke Urameshi."
An awkward silence followed this remark.
"Err…sorry Kuwabara, but I'm taken." Yusuke said, inching away from him.
Kei grinned even wider. "Don't worry…it's more of a man crush. He really admires you."
"Oh, that's no secret." Yusuke said with a grin. "Who wouldn't? Anyway…Yukina, would you like some time with Hiei?"
She smiled gratefully. "Yes please…um…if that's okay with you, Hiei."
He nodded, and everyone left the room.
"Show me the jewels." Yukina said, surprisingly demanding.
Hiei pulled the jewels out from under his robes. "I swear I never wanted to hurt you. I was bond by my word not to tell you." His words were truthful, but it seemed out of character.
"Then explain why." Yukina whispered.
Hiei told her everything, from the memories of the day he was thrown into the forest to losing the jewel to having the jagan installed to defeating Shigure and winning the right to tell her the truth. Yukina listened intently to every word.
"Now so many things make sense." She said. "That day you left, that really was advice a brother would give his sister."
He nodded, suddenly feeling uncomfortable.
"Hiei, can you promise me something?" she asked
"What?"
"Can you promise not to leave me?"
"No one can promise that." He said. That seemed to upset her, so he added, "But I can try to, if that's what you want.