Just like that, Kōki and Yūhi Shinku continued learning and discussing, and time quickly passed.
"Dad, it's already evening. Aren't you two tired? And Kōki, aren't you hungry?"
It was evening now, not noon. Earlier, when noon arrived, Kurenai Yuhi had already reminded the two, who were discussing Genjutsu, to eat.
But the two, deep in a heated discussion at the time, had mercilessly refused. She had never expected them to keep discussing until evening.
Still, Kurenai Yuhi admired Kōki for being able to debate with her father. As she listened to their exchange, she could sense how highly her father regarded him.
She was also surprised that Kōki's views could give her father inspiration. Throughout her father's instruction of Kōki, she had been listening attentively.
At first, she could still understand, but gradually, the Genjutsu her father discussed grew increasingly profound, and she began to fall behind. Yet she noticed that Kōki was listening with great interest, even offering quite a few opinions from time to time.
The sight made her realize the enormous gap between herself and Kōki, and that geniuses beyond her imagination really did exist.
Upon hearing Kurenai Yuhi's reminder, the two in the living room finally came back to their senses.
"I never expected you to have so many ideas about Genjutsu, Kōki. I said I would teach you, but toward the end, it turned into a mutual discussion and exchange. Instead, I gained quite a bit of inspiration from you." Yūhi Shinku felt a little embarrassed. He had intended to teach Kōki, but in the end, they had ended up learning from each other.
"You flatter me, Teacher Shinku. All I offered were fanciful ideas, things I casually mentioned. You could draw inspiration from them because of your own solid foundation in Genjutsu. I merely offered you some directions to consider." Kōki's expression was humble, and he took no credit.
"Kōki, you're still being too modest. I can tell that the views you offered are all very valuable. Even ordinary Genjutsu ninja could gain inspiration from them." Yūhi Shinku was very knowledgeable. He could see that although Kōki's proficiency in Genjutsu was low, he had considerable insight into its applications. Some of the views he offered were a revelation even to him.
Seeing that the two had finally stopped their discussion, Kurenai Yuhi hurried over and said, "Dad, you're finally done. If you keep going, there won't even be time for dinner."
Hearing his daughter's complaint, Yūhi Shinku laughed heartily. It was his first time discussing Genjutsu with someone so intensely and becoming so absorbed.
In truth, his impression of Kōki had been overturned once again. At first, he had treated Kōki as an elder supporting a junior, then as a teacher instructing a student. Now, he regarded Kōki as a kindred spirit in Genjutsu. Even he was surprised that his attitude toward someone could change three times in a single day.
"All right, Kurenai, I know. Kōki and I have finished our discussion. We'll eat right away." Yūhi Shinku smiled at his daughter, then turned to Kōki and invited him. "Kōki, it's late now. Eat with us."
"No, thank you, Teacher Shinku. I've already troubled you so much today. Staying for dinner as well really wouldn't be appropriate. Besides, I learned many Genjutsu techniques from you today. While I can still remember them, I'd like to go straight home and take notes."
Faced with Yūhi Shinku's invitation, Kōki hesitated before deciding to decline. For one thing, staying for a meal on his very first visit to someone's home did not suit his personality.
For another, Kōki really had learned plenty of good things from Yūhi Shinku today, and he needed to write them down as soon as possible.
Hearing this, Yūhi Shinku could only express his regret, though he still said generously, "Kōki, today was indeed a little rushed. The next time you visit, I'll treat you properly."
For that matter, he had also gained many novel perspectives from Kōki, and he needed to write them down promptly too.
"Then, Teacher Shinku, Senior Kurenai, thank you for your hospitality today." With that, Kōki rose and turned to leave.
But something suddenly occurred to him, and he stopped. He then took a scroll from his pocket and handed it to Kurenai Yuhi. "Senior Kurenai, I said earlier that as long as you could introduce me, I would give you the Superhuman Strength Technique. But now I've already exchanged it with Teacher Shinku, so as compensation, I'll give you these notes on the Chakra Scalpel. I hope you can learn the Superhuman Strength Technique smoothly."
Kōki knew that the second layer of his Superhuman Strength Technique was rather difficult. Without some knowledge of Medical Ninjutsu as a foundation, it would be very hard to learn.
So he might as well see it through to the end. Since he had already given away both layers of Superhuman Strength, he might as well give away the Chakra Scalpel too.
In any case, he felt that the Yin Release Chakra techniques he had received from Yūhi Shinku were very valuable.
Earlier, Yūhi Shinku had said that his research had only scratched the surface of Yin Release knowledge. But through their conversation just now, Kōki had discovered that Yūhi Shinku had been entirely too modest. The Yin Release techniques he had provided were already quite substantial, even reaching the level of constructing Genjutsu worlds with Yin Release Chakra.
It could be said that Kōki had truly received Yūhi Shinku's complete Genjutsu teachings.
So, in light of such valuable Yin Release techniques, there was no need for him to be stingy either. Giving everything away could instead leave others with a favorable impression.
Sure enough, just as Kōki had expected, after he handed his Chakra Scalpel notes to Kurenai Yuhi, Yūhi Shinku's gaze toward him grew even kinder.
"Teacher Shinku, Senior Kurenai, I'll be going now." With that, Kōki turned and left. He had already accomplished his goal for the day, and had even exceeded it.
Watching Kōki leave, Yūhi Shinku sat back down on the sofa, thinking of the enormous benefits Kōki's visit had brought him. Setting aside the unusual and powerful Superhuman Strength Technique, the explanations of Genjutsu and directions for applying Yin Release that followed had cleared away his uncertainty about the road ahead.
At the same time, he realized that he had still underestimated Kōki. If they had not discussed things, he would still have no idea which direction to advance in.
He found that Kōki could always look at problems from a higher perspective. At the same time, although Kōki's views seemed wildly imaginative, his explanations were coherent and seemed to follow a discernible line of reasoning rather than being pure fantasy.
Yūhi Shinku felt that Kōki clearly understood a great many things, yet lacked the corresponding techniques. It was rather like having already seen the view from the summit without knowing how to climb there one step at a time.
That strange feeling made Shinku somewhat suspect that Kōki was not a beginner in Genjutsu, but a master deeply immersed in the field.
But hearing some of Kōki's naive, basic questions from time to time dispelled that bizarre thought.