Esper Harem in the Apocalypse

"I understand everything you said, Glorias. And that's the reason your mother ran away from the vampire world, but you cannot do the same. At least, not right now," Nyxia said calmly.

"Why not? You can return to the vampire world and tell them that you couldn't find me."

"It's not about that… Glorias. I know you don't want to leave this human behind, and you won't, no matter what happens. But he will leave you."

"Are you talking about him growing old and dying? Then that won't happen. He is not a normal human."

"I am not talking about that." Nyxia looked into Rudy's eyes and said, "This human doesn't belong here. And he has to go back."

"...!" Rias realized what Nyxia was talking about. She looked at Rudy and asked, "You have to return to your timeline?"

"Eventually… yes. I have no control over it."

"Then… what about me…?"

"We will meet again."

"When…?"

"...in 2008."

"That's too long!"

"I know."

"But I will wait for you!"

"Yes…" Rudy caressed Rias' face and smiled wryly at her as he said, "But it would be for the best if… if you wait for me in the vampire world and not the human world."

"But you are not going back to 2008 right now. Please allow me to stay here until you return."

"Rias… it's hard for me to say this, but… I think Nyxia is right. You have your own life, and you have to make it right. Don't let me come in your way to what you are going to achieve in the future.

Think of it as a grace time where we both live our lives and do what we must do before meeting again. And I promise you, my love… no one will ever break us apart once we meet again."

Rias didn't want to agree with Rudy's words, but deep down, she knew Rudy and Nyxia were right. Besides, she couldn't bear to see the sad look in his eyes and his painful smile. She knew it was as painful for him as it was for her. And if he could endure it, she should too.

She nodded at Nyxia and said, "Okay, I am ready to come with you. Just give us a little time to talk."

"I wish I could. I really do. But the portal can only stay open for five more minutes. I will wait outside, so please make it quick."

After saying that, Nyxia left the house and sat on the porch outside.

Rias looked into Rudy's eyes and kissed him a few times.

"Is this what humans call a 'break-up'?" she asked with a slight smile on her face.

"We are not breaking up."

"We technically are. We won't meet each other until 2008."

"Yeah…"

"I will miss you…" Rias was trying her best to hold her tears.

"I will too."

"I… don't know if I would be able to do that, though."

"I have a solution for that."

"What?"

Rudy gulped down before saying, "I will seal your memories."

"No… you can't do that."

"Just hear me out." Rudy placed his hands on Rias' shoulder and looked into her eyes as he explained. "I will seal your memories, but it's not what you think."

"I think the meaning itself is pretty clear. If you seal my memories, I won't remember you."

"That's what I am trying to explain. Listen, if you don't remember me, you won't have to wait for me. However, I don't want you to forget about me. So the seal I will place on you will slowly weaken as time gets closer to 2008."

"And I will remember everything about you in 2008, and we will meet again?" Rias asked to confirm.

"Not exactly. When the time approaches 2008, the first seal will break, but only your feelings for me will return. And when that happens, you will come to look for me in 2008, but you won't know anything else about me.

How do I look, or where do I live? What is my name, or how old am I? How do I sound, and what are my powers? You won't remember anything, but you will know one thing, I study at a certain school in this town.

That's when I will place the second seal, which will break once you hear my name from my mouth. I will come to your house, and you will scare the shit out of me. But once you learn my name, your memories about me will return.

Your wait will end there. However, I won't remember anything, and I will be utterly oblivious to everything as, at that time, I hadn't time-traveled to 1989 yet. But you don't have to worry about that as I will fall in love with you soon.

Moreover, I will place the third seal on you that will seal your memories of everything else. And that seal will break once we kiss. How does that sound?" Rudy asked calmly.

"It's so confusing. What is the third seal for? Won't I remember everything once I learn your name?" Rias asked with a confused and curious look on her face.

"No. You will only remember me, nothing else. And to remember everything else of this timeline, we will have to kiss. It's just to avoid letting you remember about my powers and stuff, as I myself wouldn't be aware of that when I first met you in 2008."

"So, in other words, I will forget about you, but I actually won't. And you are sealing my memories, so I don't cry every night and remember you and our time together. And also to keep everything as it should be in 2008?"

"Exactly. Because time travel is something, no one can understand. Turns out I messed up in this timeline, and the 2008 timeline changed completely. So I will just have to make sure that I fixed everything before I suddenly find myself back in 2008," he chuckled softly to hide his sadness.

"Let's meet again in 2008." Rias kissed Rudy on the lips and closed her eyes. "Go ahead. I am ready."