"Personal assistant", Naoto said, but Yousuke hasn't felt like a personal anything since he woke up with years gone. He figured he'd grow back into it once he accepted it—muscle memory, maybe—but now he's sure he's the wrong guy in the wrong place.
He told Naoto this.
The response was surprise, then assurance. "Your support is indispensable," Naoto said. "I've been able to work more efficiently, now that you've returned to fielding intermediary tasks."
"Maybe. I feel like I should be doing more, though."
"Like what?"
He didn't have an answer then. He might have an answer now.