Why not both?

Rias slowly woke up, stretching, revealing her huge jugs for the world to see, smiling at Issei:

“Good morning Issei.”

He gulped, “good morning, ****.”

Suddenly, she felt a huge pain in her head, then went blank.

“R-Rias?” He said, not sure if it worked.

“Yes.” She said, with no expression.

She was laying down, but her arms were still, and her face had not a single sign of expression.

“Can you stand up?” He said, testing the waters out.

“Yes.” She turned out of bed, faced him, and just stood there, looking into an oblivion.

Before he could continue, Asia started to wake up also.

“g-good morning Issei.” She said with sleepy eyes and a pure smile.

“morning Asia.” He smiled back.

“Why is Rias standing like that?”

“I don’t know ****.” Making sure that Rias isn’t playing.

In the blink of an eye, Asia went from smiling like there was no tomorrow, to liking like a dead person.

“Asia can you hear me?”

“Yes.”

“Stand up.”

“Yes.” She got out of bed, faced him, and looked straight ahead of her like Rias.

“It works!” But he had a thought.

He approached Asia, and jumped on her breasts, only for her to still show no emotion, causing him to go beat red.

“w-w-w-w-wait t-THIS WORKS?!” He said, jumping back.

He heard someone shout “IS EVERYTHING OK?”

“YES IT IS!” He shouted back, not being able to hear who it was.

He then shut his door, locking it in the process, then turned back towards the girls, standing on both sides of his bed.

He now....