"Okay," Kaneki whispered, his hand still on his stomach. Tsukiyama loosed the clamp again and Kaneki felt the warmth continuing to enter his body. He continued to try to massage away the dull ache of the cramps as he felt his stomach slowly begin to expand from the amount of liquid he'd taken. "Stop," he choked out again. He wasn't supposed to ask how much, but he was desperate to know. He'd felt like he'd taken half already, but he knew it was probably more like a quarter of the bag. "Tsu?" he asked, voice close to cracking. "I-I . . . Tsuki." His voice was weak.
Milk fic variation:
By Aobasaurus