Atsushi is your guardian angel. Of course, you didn't know that you had one at all, like many people on earth. That's why you were constantly getting into failures over and over again, and by luck some of them were resolved as well as possible. There were so many problems that Atsushi couldn't help you deal with all of them and protect you properly, even though he works hard. Now you're busy watching your favorite movie, while Atsushi sat next to you, knowing that you couldn't see him, and wearily exhaled "how difficult everything is"