He needs comfort, and he needs it fast. He's lost his job, his girlfriend, his entire world, so all he really wants right now is some small bit of reassurance that everything's going to be okay in the end. So he practically drags himself to Kaito's door, and when the bluenette opens, Leon practically breaks down at his feet, and of course, Kaito lets him in, because that's just the kind of person he is, the kind that can't exactly say no to anybody even if he tries. So he gives Leon his bed, his food, his home, his heart and emotions, after he explains his predicament. Leon feels bad, oh, he does, but what is he to do? Kaito's given him all of this for practically free, and he doesn't want to seem like he's brooding ball of angst that won't accept help when he quite obviously needs it. So Leon thanks, oh God, does he thank him, but he still refuses to sleep in Kaito's bed and merely takes the couch. The bluenette doesn't have a problem with that.