Undying Love?

Yami watched Yugi as he slept that night, not wanting to be in the puzzle if the boy woke up during the night and making him think he had dreamed all that. Being a vampire as a result of the sealing spell and by no means the result of a curse, Yami had no need to feed of the blood of another and could watch the boy contentedly with no pangs of bloodthirsty hunger. The vampire wished he could still sleep however: He’d love to be able to pass the time better. Deciding that Yugi wasn’t the type to clean his room from the obvious state it was in, Yami had the charity to clean it for the boy, silently placing things where they belonged, carefully avoid waking the boy.
At 6:30 am, a loud beeping pierced Yami’s ears, and he shrieked at the sound unintentionally. Yugi jumped out of bed and turned off the alarm clock on his desk. The petite teen turned to Yami, the vampire staring at the alarm clock like is was possessed. The boy’s face broke into a grin.
“I take it they didn’t have alarm clocks in your time?” he joked, placing the now silent object back on his desk. The boy yawned and stretched out his back, Yami feeling heat rushed to his cheeks. The boy was so innocent and pure: The vampire used every ounce of willpower to avoid tackling him onto the bed and... ‘No, don’t think like that. You are NOT a true creature of darkness!’ Yami reprimanded himself.
He averted his eyes as Yugi shamelessly dressed into his school uniform in front of him. Obviously the boy had NO idea how difficult he was making this. Yami cleared his throat and Yugi looked at him as he buttoned up his blue school jacket.
“Yes?” he asked innocently. Yami turned away, blushing.
“Um... Do people in this time always get dressed in front of each other?” he asked. Yugi laughed.
“No, but in gym locker room, the boys have one area where they all get dressed and shower after gym. I’m sure the same goes for the girls, but I’m not like Jou - I don’t even want to try to sneak in. More trouble than it’s worth,” the boy mumbled. Yami looked even more confused.
“Then why-?”
“Dunno,” Yugi replied, knowing what Yami was going to ask from his previous question. “It just feels so natural to be around you, I just didn’t think twice. I’ll change in the bathroom next time.” The teen smiled gently, but there was a hint of sadness there this time. Yami frowned.
“You don’t have to if you don’t want to. I- I’m just not used to that sort of thing is all, it’s no big deal,” the vampire said quickly. Yugi nodded, but he still sensed that something was bothering the vampire. The teen looked around his room, noticing for the first time that he could see the floor.
“You cleaned my room!” he squealed, jumping onto the vampire in a huge hug and knocking them both to the floor. “Thank you! I HATE that chore!” The vampire chuckled, the laugh rumbling deep in his chest. Yugi got off of Yami and went to grab a steel chain off a hook. Yami looked at him puzzled before he saw Yugi put the Sennen Puzzle on the chain and slip it around his neck.
“Yugi?” the vampire asked in confusion.
“This way I can take you wherever I go! I assume since you were sealed inside the puzzle, you’re still bound to it somehow. This should at least solve part of the problem,” the boy said cheerfully. Yami nodded, tears of joy appearing in the corners of his eyes. Yugi grabbed his backpack and slung it over his shoulders. “Come on! I don’t wanna be late, I have Ms. Chrono for homeroom!” The boy made a disgusted face. Yami frowned at the ugly look marring the boy’s perfectly cherubic face and disappeared into the puzzle in a flash of golden light, intending on teaching this Ms. Chrono a thing or two about treating innocent people right.