"Amusing or not, it'd never be a waste of time, senpai. Even if all we did was argue, it wouldn't be a waste because we'd still grow from it," Shiori said, perhaps a bit too seriously for the conversation.
She grinned sheepishly, adding with a quiet laugh, "School, though... now that's a waste."
Well. For her, anyway. She knew there were some students who took it a bit more seriously than she did.