Ryuutaro stared at Hayato and for a moment he was really glad he didn't blush very easily.

"I may be tired, but not that tired. I'm not going to pass out like this, you know?"
What did Hayato even think? He wasn't... he wouldn't...
As cute as the offer might've been, now Ryuutaro definitely wouldn't sleep, reacting like kids would usually react.
This went deeper though, to thoughts of keeping up, but for a moment he just seemed to be childishly offended.