While Kars was lost in thought, Yuuka Kazami was feeling the changes in her body. The stimulating pleasure spreading all over made her body tremble slightly, but relying on her strong physical constitution, she didn't end up a mess like others.
However, the instant reaction made her body feel special, but what interested her more was the strange energy causing all of this. This unique energy, when absorbed by her body, brought about a subtle change in her body. It was this change that caused the wonderful side effect of pleasure.
However, the change was so subtle that she couldn't immediately determine what it was or what kind of benefits it might bring.
Is it because of my physical condition that this effect isn't obvious? Or do I need to increase the input amount?
Yuuka Kazami considered the possibilities, and finding out would only require Kars to increase the energy.
While she was thinking, Kars also made his decision. He remembered what he had done to the sleeping Yuuka Kazami before, and what Yuuka Kazami said afterwards made him make up his mind.
"Um, Sister Yuuka, can I increase the energy I give you?"
"Huh? Why would you think that?" Yuuka Kazami asked, a little surprised. She hadn't expected Kars to have the same thought. However, she didn't explain. She was very willing to see Kars make such a request to her.
"I… I want to see Sister Yuuka look even better…"
Hearing Kars's thought, Yuuka Kazami understood that he wanted to see more because her expression earlier made him feel pleased.
"You can."
Yuuka Kazami agreed. Kars's face brightened with joy at the consent. When the abundant activated energy was absorbed by Yuuka Kazami's body, the feeling this time was much more intense than before.
A visible flush appeared on Yuuka Kazami's face. This time, even relying on her own physical constitution to endure it only lasted for a moment before she failed.
Kars heard the familiar trickling sound and looked at Yuuka Kazami's face. Seeing her face, which usually didn't change much regardless of the situation, now showing a hint of shyness and holding back from making too obvious a sound, made Kars's heart pound rapidly.
"Hah~" Yuuka Kazami let out a gasp. Feeling the liquid flowing down her thighs and the wet fabric sticking tightly to her skin, this first-time experience made her feel very complex emotions. However, it also made her aware of the changes brought about by the energy.
"Kars, if possible, I hope you'll come and find me often from now on."
"Huh? Is something going on?" Kars was curious about this request.
"I want to make your growth even faster." Realizing the changes brought by this energy, Yuuka Kazami brought forward a plan that was originally meant for the future—to train Kars into the ideal person she envisioned.
"You still don't fully understand the energy in your body, do you?"
"No, I don't understand it much yet. Sister Yuuka, do you know something?" Since she brought it up, it suggested Yuuka Kazami had figured something out, which made Kars a little surprised and curious.
"I can't say I know everything, but I know a little bit about a very special aspect. This energy of yours can promote a very mysterious change in the body, or rather, it can induce a mysterious evolution." This was why Yuuka Kazami wanted to bring some arrangements forward. If she could guide him in this aspect, Kars might become even better than she expected one day.
"It can cause the body to evolve?" Hearing Yuuka Kazami say this, Kars couldn't help but think of the situation in the Netherworld when his eyes emitted light beams. He couldn't do this before, but now he could suddenly use this attack, as if he had always been able to.
If it really was a change brought about by the evolution of his body, as Yuuka Kazami said, it would make sense. As for how to promote this, Kars suddenly thought of a certain possibility.
Gulp~! Kars swallowed, asking Yuuka Kazami with a hint of nervousness, "Then, Sister Yuuka, when you say you'll help me promote this, are you… are you planning to fight me?"
"Exactly."
A brilliant smile appeared on Yuuka Kazami's face. In her view, only through combat could the energy's effect be maximized, rather than being used passively and simply, making the evolution very slow and ineffective. Squandering such a good talent was simply unbearable for Yuuka Kazami. Moreover, she hoped that Kars would not only satisfy her in life but also meet her demands in combat, shaping him into her ideal. That had been her original idea.
Getting this affirmative answer, Kars's face instantly became gloomy. It's exactly as I thought. Didn't this mean that even without reverting to his adult form, he still couldn't escape this fate?
"If your performance satisfies me, I will also reward you." Yuuka Kazami continued. She could naturally see Kars's attitude towards this matter, so she would set up a reward to make him more enthusiastic about it.
"Reward?" Sure enough, upon hearing about a reward, Kars became somewhat energized. Yuuka Kazami didn't specify the content of the reward; instead, she opened her mouth and made some particularly seductive gestures while Kars's breathing became rapid. Using this extremely tempting way to hint at the reward was undoubtedly much stronger than a verbal description.
At the very least, Yuuka Kazami felt that Kars was completely excited by this, no longer worried about what was coming next, which was enough to demonstrate the effectiveness.