I was wondering about writing a story of Diabolik Lovers X Walking dead instead of this. But soon, I've thought that the characters in DL won't be able to survive, especially Yui. Also, Yui is the only female character in DL, except the mothers of Sakamakis', am I right? And in a moment, I had a terrible thought of Yui targeted to every males. So, MAYBE I'll write that story AFTER I finish this, so Yuka can have a chance to appear, and in order to protect Yui.

OK, enough chatting. Let's go!

Chapter 4

Yuka's POV

I heard a loud Thump as I past through the doors. Was that Yui? I hurriedly flew to the place where the sound came. Then, just as I saw some pile of chains, I heard a beeping sound, and I was shocked as a red light flashing on the symbol on my chest. In a second, with a big flash of red light, I changed back to normal. Uh-oh.

I quickly got a chance to run into the closest door. If those vampires saw that, I would be targeted much more than I'd expected. I shut the door behind me before I saw Yui crouching in pain. She was holding her chest tightly. With worry and some anxiety, I walked closer to Yui, who was still shaking in pain.

"Yui," I called her. Yui raised her head and saw me in surprise. Then I placed my hand on her right shoulder and smiled warmly.

"You, you're back," Yui's voice was shacking. Soon, she hugged me with a relief. I heard her sobbing in my arms. "I thought you won't come back."

I patted her head softly. Even if she knew I'm strong, maybe that wouldn't calm her down. She was so kind, and always had a worry to others. I giggled and replied. "Who, me? Hey, don't be ridiculous. What makes you to think that? Did the God told you? Even the God won't help you calming down, you know that?"

"Yuka ne-chan!" She yelled at me, as if she was not in a mood to play jokes. Well, absolutely she wasn't. I giggled at this and stroked her hair. Yui puffed her cheeks.

Cute. I thought. But then, I saw some books landed beside her. I twitched my eyebrow in wonder and noticed the reason of the sound. I asked her what happened. She explained that she saw someone at the balcony, and then she felt her heart suddenly in pain, and she bumped into bookshelves. I looked at the balcony but I didn't see anyone, only a moonlight. Who was the person she saw?

"There's no one out there, Yui," I told her and saw that her face had an expression of confusion. I started to gather the books. "I managed to run away from them, but I don't think they didn't heard that loud sound. Let's get out of here before they-"

I froze when I saw a photo and a small diary. I picked them up. As I looked closer to the photo, I held up my breath. Yui noticed my face and looked at the photo before she made a gasp.

In the photo, a familiar man was holding two babies on each of his arm. One had blonde hair and a Rosario on its neck. The other had light brown hair. I soon noticed this. This man...was our father. And these two babies were... "Are they...us?"

"Father? Wait... Is this our father's diary?" Yui asked me as she pointed her finger to the book I was holding. Then I looked at the writing. I was shocked when I noticed it. It belonged to father's. But how? And why? Then Yui grabbed my hand to look at it properly. I looked at the diary, too.

Yui and Yuka give me happiness. The fact that they are not my real children means nothing for now. I'm only grateful for this great blessing every day I live...

Wait, what? Then that means... We're not father's children? We were adopted? But why was his diary in this house? I started to confuse at the fact we knew. My hands trembled. I was almost about to drop the diary. Yui didn't say a word. Then she looked at me.

"Yuka...ne-chan... What do we have to do?" But I couldn't replied, because I heard the familiar voice in the room. Reiji.

"Of all the rooms, you've entered this one," Reiji said. "This room is the place we've sealed off so nobody would enter. I guess I'll need a new lock to fit it."

All of the brothers were in this room. The triplets were in front of us. Some of the brothers glared at me about what I had done before.

"Sure is," Laito agreed with a grin. "How did you entered here, Little Bitch?"

"You're prey, so stay still." Kanato said, staring at us.

Prey? Well, they're vampires and we're humans. Human's are prey for them. But even I knew this, it was so unpleasant to hear that. Being called prey by someone was not a good hearing.

Yui grabbed my right arm and spoke shakily. "We, we're nobody's prey..."

"Enough excuses," suddenly, Subaru knocked the wall with an annoyance, causing few more books fell to the floor. We flinched at this.

"Oh, c'mon! Not again, Subaru," Laito responded to him teasingly.

"Shut up," he said.

I quietly pulled my sleeve, hoping none of them would see me. I saw the shape of an hourglass colored red. That meant it still needed recharging. Everytime after I transformed for few minutes, I needed to wait for the same time, to have the next chance. I clicked my tongue before I hid the watch. Can't I just turn into aliens whenever I want?

While I was paying attention to the watch, I didn't noticed that Ayato was grabbing Yui's chin and ready to suck her blood until I heard her gasp. My eyes widened and I reached my left hand to pull Ayato away from her, but it failed when Kanato grabbed my wrist. The worst thing was, he grabbed the watch. I couldn't let out any sound. His eyes narrowed. I realized that he felt the device on my wrist. I tried to pull my hand out from him, but it was useless. Because he was a vampire, he was too strong for me to get free from him. Then I heard a gasp and turned around. I saw the rest of the triplets was about to bite her, licking her skin.

I couldn't stay calm. I heard nothing. The triplets were going to bite her. Kanato was grabbing my wrist. I couldn't help Yui. That was enough to make me frighten.

I saw Kanato leaning towards me, showing his fangs. I couldn't stay calm. All I could think was the fright towards them. I grabbed his shoulder to push him away, but Kanato didn't stop.

"Get...off..." I murmured. Kanato stopped for a second, but he didn't move away, just leaning more closer. I tried my best to push him, but soon I got afraid as Kanato's grin grew wider. I was surprised to my own reaction as I pulled my left arm, but I didn't considered that not in the least, and shouted. "I said... GET OFF!"

Then, with a little green spark, a huge impact of green light exploded from my wrist, probably from the watch, causing Kanato flew back and bumped on the floor. The impact was so sudden and strong, even I flew and bumped into bookshelves. Not only the rest of the brothers were shocked at this, but also I was. For seven years, I hadn't experienced this. Before my sight go black, I saw the watch covered with rings of green light and electricity, and Yui calling my name.

That was the end of my memory of that night.