Sibling Rivalry

Tyrinn grumbed to herself as she entered Koga's lands. The wolves and youkai were everywhere. While the wolves lounged around or playfully chased youkai pups, the wolf demons were working on cooking, making fur blankets, and sharpening weapons.
"Hey Ginta?" Ginta looked up at his leader's mate and stood, nudging Hakkaku up who was beside him.
"Yes sister? Is there anything you need?"
"Is Koga around?" She looked around as she spoke, and turned to the two to wait for an answer, when two strong arms wrapped around her waist from behind and lifted her up, spinning once.
"Eh I dunno. he's around somewhere." A familiar deep voice answered. The arms set her down and spun her to face him.
"I've missed you mate." Tyrinn mumbled, burying her face in his neck. "You've been gone hunting for weeks. I got lonely." She raised onto her toes and nipped his ear. "Especially at night, love. I was cold all night. I even started my heat while you were gone." She whispered huskily in his ear. Koga inhaled the skin on her neck and immediately got hard. He slung her up over his shoulder and bolted off into the woods, getting far from the den, before he set her down.
He nudged her back so she leaned against a thick tree, and sniffed at her neck. Tyrinn sighed and closed her eyes as he sniffed down her body, taking in her scent. He sniffed at her crotch for a few moments, taking in her scent where it was strongest. She whimpered as she felt his nose nudge between her legs, his head ducking under her loin cloth to bury his nose in her.
Koga groaned at her intoxicating smell and nipped at her clit, making her jump. He thrust his tongue into her and opened his mouth, swallowing as much of her fluid as he could.
Tyrinn groaned and grabbed Koga's shoulders, pulling him up to her. He slashed her lips with his in a deep kiss, his mouth slanting over hers to kiss her deep. His tongue luered hers into his mouth and he closed his mouth on it, sucking on it.
"I need you. I've been so hard every night and I gotta do it myself. I went to sleep with my hand wrapped around myself, imaging it was your warmth. Shit mate it wasn't even close. I need ta be inside you." He groaned and trailed his hand down her side, his left one sliding into her hair and pulling her mouth tight over his, while his right caressed her inner thigh. Tyrinn growled into his mouth as he thrust two fingers up into her, thrusting them in and out in the same rythem as his tongue. He lowered her to the ground and tore off her loin cloth and top, while she untied his fur wrap and armor.
Koga sighed happily as he sunk his length into her. Pausing for a few moments to cast the feel of her again into his mind. He lowered his head to suck on one of her hard nipples, while he thrust into her again, his tail held high as the dominant male.
The lovers were almost to their detsination, when a loud roar sent the birds in the trees flying into the air, animals scattering, and made the two freeze.
The voice was male. An angry male. An angry male VERY close by. The voice ...... was Inuyasha.