[They sleep all day. Like, all day. Atem wakes up sometimes, sees that Ryou's still asleep, checks the time, considers the question of vengeance, and then decides to put it off for a few more hours' shuteye. It can wait until evening, until Ryou's rested, until he's rested. So, he doesn't leave. Atem stays, drifts off again, occasionally having dreams intense enough to make his snakes move and leave him mumbling unintelligibly, but mostly snoozing peacefully, until Ryou wakes up.]
action! probably evening of above thread, he has less than a day before the shed gets Bad