A/N: I OWN NO PART YU GI OH 5DS! ALL RIGHTS GO TO THE CREATORS!

Chapter 27: The One Fear

Era's POV

Yusei and I were flying around the skies late the next night.

"Am I the only one worried at the fact we haven't even sensed a demon since you got me out of the Underworld?" I asked Yusei.

"I know," he replied. "I don't like it either. It doesn't seem right. I had thought Brehnam would send any demon he could to get us."

"Let's take a quick rest on the top of the Infinity Tower," I suggested. "Sound good?"

"Yeah," Yusei answered. Though there was something in his voice that I couldn't place.

Once we landed, Yusei sat down, sighing with the same weird feeling in his voice, and I asked sternly, "Alright, what's wrong?" Yusei looked at me shocked. "Who's known you since you were a baby, Yusei? I know when something's wrong and I can tell. So spill it."

"You just haven't told me what was wrong with you just before Lyndon finished fixing the clock," Yusei replied. "I'm worried about it, that's all." I looked down. I had wanted to tell him, but I just didn't have the courage to let out the bothering question. "What is bothering you, Era?" Yusei grabbed my hand and gently pulled me down beside him, keeping me close.

"It's just… a question that I don't know how to ask exactly," I answered vaguely.

"You can tell me anything," he responded. "You know that."

"I know I can. It's just…" I stopped. Yusei pulled me a bit closer. I sighed. "Yusei, what would you do if I died before you did?"

I felt him tense and he immediately turned me turn him. "Why would you even ask that?" he asked. His eyes held pure concern and shock in them.

I looked down. "I'm… just worried about what you would do," I answered. "What would you do? Honestly."

Yusei was silent for a few minutes and I knew he was worried. "I… I'm not really sure, Era," he answered and I could tell him was being honest. "I don't know what I would do if I lost you." He slowly brought me in tight to the point where my head was against his heart. "But I promise, as long as I'm alive, I'm not going to let you die." He tightened his grip. "I'll be the one to die first. And it'll only be because I was protecting you."

"Yusei, you can't die like that. I couldn't live without you," I stated gripping onto him and tucking my face into his shoulder. I was struggling to keep my voice calm and steady while I struggled to contain my emotions.

"Era…" he whispered into my ear. "What do you think you would do if I died?"

"I…" I stopped. "I wouldn't be able to go on without you at this point, Yusei. If you died before me, I'm not entirely sure I would, but… I would probably end up killing myself."

"Era, you better never do that," Yusei retorted. "I know you. You wouldn't give up like that. You would just die because you lost someone you care about."

"Why do you think it was said angels died because they were protecting something they were attached to?" I responded as tears were beginning to break free. "And I love you too much to see you leave without me."

"You won't lose me, Era. I'll make sure of it. Just don't make me lose you either," Yusei responded.

"I'll… try not to," I told him. "As long as I don't lose you, I won't make you lose me."

"Good," Yusei responded. He slowly kissed my right temple to comfort me which worked. "Because my biggest fear is losing you." I looked at him slowly, shock on my face. "There's a reason why my body naturally made us mates, Era. And it's because I love you to the point that I'm afraid of losing you. Because I will protect you by any means necessary."

I lightly placed my lips to his, but he brought me as long as possible deepening the kiss. I eventually pulled back to breathe and say, "I love you, too, Yusei." I set my head back on his chest. "I can never lose you. I'm your mate for that reason too."

I felt a spike of darkness and we stood up alert. I scanned the area for where the darkness was. When I located it, Yusei gave a groan of pain. I flipped behind us to see Brehnam flying off and disappearing into the Underworld.

Yusei fell to one knee and grabbed his shoulder. I gently pulled his hand off to get a look at it and saw it. A black, purple glowing crystal was embedded in his shoulder, and I knew what it was. An Underworld Curse Gem. I had been hit with it before and had it not been for the Healer Angels in the Afterlife, I would've died.

"Yusei, hold still," I ordered.

Before he could respond, I grabbed the dark gem and yanked it out. Yusei groaned and panted. I immediately threw the Underworld Curse away as it burned my hand. The gem evaporated once it was done skidding across the top of the Infinity Tower.

"What… was it?" Yusei asked still sounding in serious pain.

"An Underworld Curse Gem," I answered. I looked to see the skin around where the puncture wound had a black and purple glowing vein design around it. "I had gotten hit by one twenty years ago and almost didn't make it." He looked at me confused. "An Underworld Curse Gem is basically a way to transfer a deadly darkness infection to an angel. It starts out small but slowly grows throughout the body. Once it reaches both your heart and mind, it kills you. And it's extremely painful."

"How did you survive it?" Yusei asked.

"An extremely experienced Healer Angel who had dealt with a couple other Underworld Curse Gems before used a powerful spell to get it out of my system and save me," I explained. "I had to be put under because of how painful the process would be. But… Izoa had killed her when he took over the Afterlife." I looked down. "And I don't know any other Healer Angels who know the spell and can save you."

"We'll find a way, Era," Yusei told me. "I promise. Maybe you can talk to Myla and Cornelia. Combat Angels don't know most of the complex spells that Healer Angels know. Maybe they know the spell and you were never told."

"Maybe," I agreed but I was doubtful, and I knew it was obvious.

Yusei wrapped his arms around me, and I could tell he was ignoring the pain. "Until we have the chance to get to Cornelia and Myla and talk to them, you can just use an antibiotic spell and pain relief spell. I'll be fine," he told me.

"How… can you be so sure?" I asked nervous.

"Because I just promised you that you would never lose me," he answered. "And that's one promise I'm not going to break. So trust me to keep that promise."

"I trust you," I replied. I slowly used a pain relief spell followed by an antibiotic spell. Yusei relaxed a bit. I looked down in worry, wishing more than anything I could do more.

"Don't worry, Era," Yusei whispered. He slowly brought my face back up to meet his. "I'll make it through this. You won't lose me anytime soon."

I nodded. I sensed around for anymore darkness and noticed the sun beginning to climb. "Let's get back and get some rest. You'll need it to fight the infection better," I told him. Yusei nodded and we took off with me sticking close to Yusei.

As soon as Yusei fell asleep, I used my locket to send a communication to Myla about the situation. She immediately responded saying that as soon as she and Cornelia find their freedom, which they would try to make as soon as possible, they would hurry over to check it out. But I was worried that by the time they arrived, it would be too late.