"So what did you mean by trying something else?"
When his sister was ready to listen, Rain began.
"First of all, I want to ask you if you felt anything unusual in your body after that night?"
From the moment Rain had used the Ticket of Connection on her, due to the system, he had felt an invisible connection between them, and he wondered if she could feel it too.
Although it was created with a system item, it wasn't something impossible with her inhumanly keen senses.
Liana tilted her head questioningly to the side, pondering his question.
"I felt myself... um... full?"
Coughing at her meaningful answer, he counted it as a yes.
"Let me try something."
Under her surprised gaze, Rain put his hand on her heat-reddened skin.
According to the system's words, energy, life force, and even skills can be exchanged with the link between them. Now that the link had stabilized and strengthened a bit, it was time to use it.
While he didn't know if it would be of any use to him, any opportunity was worth trying.
With that determination, he focused on the bond between them. It took about a minute before he finally managed to grasp it with confidence.
Assuming that was enough, he gave one of his prearranged commands and luckily it worked, because in the next second his surroundings changed and the familiar light of the room turned to semi-darkness.
Looking around, Rain noticed the quiet smoothness of the water beneath his feet, stretching as far as his eyes could see, and a spherical object in the sky that, like the moon, illuminated the surrounding area with its gentle yet chaotic light.
"The Soul Core."
That was the first thought that came to his mind when he saw it.
"If this is truly the Soul Core, then it should be a Sea of Soul."
Rain looked over the dark, ripple-free surface of the water once more and confirmed that he had come to the right place.
All the abilities one possessed were imprinted in one's soul and could be found in the Sea of Soul. Under normal circumstances, no one but the owner of the Sea of Soul could enter it, and even the owner could only do so after reaching the Transcendent Soul stage.
Realizing that he had managed to bypass this restriction, Rain focused on why he had come here.
There were blobs of light flying around the Soul Core, which in all likelihood were the essences of the skills Liana possessed. Almost all of these essences were different, varying in both size and density as well as in the brightness of their glow. And while most of them looked unremarkable against the backdrop of the Core, some of them radiated an oppressive pressure of power.
Liana was beside him and didn't seem to move from her position at all. Before Rain could ask what was happening, she pointed downward.
"It's still inside..."
Glancing at the spot where their bodies were joined, Rain realized that they were still in the same pose they had ended up in. Not that either of them minded, though.
'What a cozy pussy.'
Taking his cock out of his sister, Rain stood up from his chair, looking around at the mess they had made.
"Did you do what you wanted to do?"
Asked Liana in a slightly frustrated voice, feeling empty inside.
"Yes. Do you sense anything unusual?"
She thought for a moment before answering.
"It feels like I've gotten even closer to you... on some intangible level."
Rain nodded her head understandingly.
After using the cleaning spell a couple times to clean themselves up, they began to remove all traces of their being in the room. When that was finished, Rain turned to her and hugged her from behind.
"Working out with me is more effective for your body than with your sister, isn't it?"
"Yes."
Without hesitation, Liana confirmed, straightening her skirt.
"Speaking of your sister, it's about time we got back to her."
When all the 'important matters' were taken care of, Rain was the first to step out into the hallway. The first thing that met him there was Eliana's gaze, which seemed to grow even colder.
'I wonder if she's heard anything.'
It was hard to answer that question from her impenetrable face, so Rain just left it at that.
It wasn't until her sister followed Rain out that her gaze shifted to her, becoming softer.
"Come on, it'll start soon."
***
Thanks for reading, everyone.