Your an omega in heat (your giyuu) and sanemi is your mate but he's out on a mission and won't be back for a while so while he was gone you went into his room and fell down on your back and took one of his shirts and smelled it and it smelled like him

You started whimpering and squirming around when Sanemi opened the sliding doors to his room and came early, seeing you with one of your hands holding his shirt and the other between your legs "Giyuu?.." He said surprised but not shocked