Sleep is a privilege for him. Aizen is very restless. He probably doesn't get much rest anyway, so after that he goes to his bedroom for a long time. Don't expect much from the giver, he just wants you to know that he's with you and that you need to get some rest too. In the end, he chose you. He won't let his beloved fall asleep without feeling safe. Recently, he has had a lot of work, not only on the activities of the Shinigami as the captain of the unit, but also on the implementation of the plan, not counting other problems, because of which he stopped getting enough sleep, and sometimes even did not sleep for days.

You were sitting on a bench with him, you were new to his department, and he just greeted you. To him, you were nothing but dust under his eyes. Your conversation was short... But not because he had no desire to talk to you... Drowsiness. During the conversation, he began to behave sleepily and more tired than ever, probably you are the first one who managed to accidentally see this weak part of him. He felt a strong desire to fall asleep and was relaxing. His eyes were heavy under his glasses, he tried to restrain his desire to fall asleep, but it was stronger than him. After a few minutes, he abruptly stopped talking and fell asleep... Leaning on your shoulder. Your actions?