"Shitoo…"

Shito ground his teeth together, taking off his glasses to glare at his silver-haired zombie. "If you didn't notice, I'm trying to do my homework right now, Akatsuki," he growled.

"Yeah, me too!" replied Chika, who was sitting on his closed biology book.

"And, pray tell, how can you do your homework while you're sitting on the textbook?"

Chika raised his eyebrows. "You can do something while you're sitting on it."

Shito sighed, dropping his head. "I don't even want to think about what you meant by that."

Chika pouted. "You don't?"

"I do, but not right—No! I don't!"

"Aww." Chika crossed his arms, turning away from Shito. "Fine!"

Shito gave a sigh of relief and started to read his textbook.

Water moves from a hypotonic to a hypertonic solution if the hypotonic solution has more kinds of—

Chika spun around, bouncing in excitement. "So do you wanna have sex later, then?"

Shito gritted his teeth and kept reading.

Of solutes—

"That means yes to the sex, right?

Seawater, which has a great variety of sex, will lose sex to a very concentrated solution of a single sex—

"Akatsuki!"

"What?" Chika smirked.

"Shut up!" Shito clenched his fists and stared pointedly at his textbook.

"So, no sex, then?"

Because the total sex concentration of the sex is lower—

"No!"

"But, Shitoo, please?"

Shito growled and turned to face Chika, unsuspecting of the doom that would befall him. The puppy eyes.

He winced. Damn. An unfair tactic. He shook his head to clear it. "No!" He turned away. "Fuck off."

If two solutes have golden eyes, water moves across a membrane by being so damn hot; that is, there is no net sex between Chika and me—

"AKATSUKI!"

"Whaat? I didn't say anything." Chika pouted again.

"Stop."

"Stop what?"

"Stop…being so…you!"

"You like it, though."

"That's…beside…the point!"

"Whatever. Maybe I'll go hang out with Michiru or go zombie hunting or something instead…"

"No. You stay here."

Shito looked away. Okay. Biology.

The movements of Chika across cell membranes and the balance of Chika between the Chika and its Chika are crucial to Chikas—

"I give up!"

"You give up what?" Chika asked, blinking innocently.

"Fuck you," growled Shito, shoving his biology book aside and rolling over onto Chika.

Chika grinned. "Just pretend you're getting an anatomy lesson."