Fu Fu kicked his legs and scratched his neck. They trained until dusk, then returned to the Demon Slayer Corps headquarters from another remote path, completing the day's work. When Hudie Kanae and Hudie Shinobu returned to the headquarters, they almost used up the energy they had to eat, but their small breasts were rising and falling with an extremely high frequency. After dinner, the sisters lay down on the tatami in the house and soon closed their eyes tiredly and fell asleep. Yuzhongjin then walked in and cast the spell "Healing" to heal Hudie Kanae and Hudie Shinobu to prevent unnecessary injuries due to over-training. The same thing happened on the second day, and the day after. Beimingyu Xingming arrived at the scene and noticed that the two sisters were exhausted and collapsed on the ground. Yuzhongjin, who was standing next to them, was still saying, "Wash your dirty clothes yourself tonight. I didn't allow you to lie on the ground." "Mister Miko, if you find it troublesome, you can let me guide them." In response to this, Beimingyu Xingming suggested. "If they want to do something like this, they will bring it up themselves. There's no need for you to bother coming here specially, Rock Pillar."

Mizoe Tsu gave a rejection response, then walked up to Hudie Kanae and asked from a low angle: "What do you think? If you can't even do this level of training, even if you join the Demon Slayer Corps, you will just become more delicious food for the demons in the end." "We can do it, teacher!" Hudie Kanae and Hudie Shinobu climbed up. "Then continue." Yuzhong Jin did not deny the other party's address to him. "I'm the one interrupting." Beimingyu Xingming also "saw" that Yuzhongjin was serious, so he stepped back and left. At the new night, Yuzhongjin waited until Hudie Kanae and Hudie Shinobu finished their meal and returned to their room. He estimated that the time was about right, so he went over to "heal" the two of them. However, when he arrived at the door, he heard two people whispering inside the room. The sound was quiet, but she could hear it. "Sister, I'm so tired." Hu Die Shinobu nestled in Hu Die Kanae's arms. "We have to hold on, Shinobu. Those terrible evil spirits killed our parents, and they will continue to hurt others. So we have to become stronger and use our own strength to protect the happiness that has not yet been destroyed by the evil spirits. We must not let this pain befall others again." Hudie Kanae said while hugging Hudie Shinobu. "...Will my sister continue to persevere?" Hu Die Ren raised her head and asked in a low voice. "Of course, as long as Xiaonin is still by my side, I won't give up. Let's make a pinky promise." Hudie Kanae reached out her hand and hooked the little finger of Hudie Shinobu's right hand. "Ah." Hu Die Ren lowered her head.

The noises in the house gradually became silent, and Yu Zhuanjin also felt that the person inside was breathing calmly, and was obviously asleep. However, she did not go in immediately, but looked up at the bright moon in the sky. Putting his hand on his chest, Yuzhongjin finally understood why Hudie Kanae and Hudie Shinobu were so powerful. Not for yourself, but to protect others. If that's the reason... Maybe she should respond. Immediately, Yu Zhuanjin entered the house and performed "healing" on the Butterfly sisters as per custom. Having said that, Yuzhongjin must see their determination before making a final decision. Anyone can say nice things. Even if Kanae Hudie and Shinobu Hudie did become powerful in the future in the original work, they both died at the hands of demons in the end. Yuzenjin didn't want the people he taught to end up becoming food for evil demons. Until the evening of the seventh day. Hudie Kanae and Hudie Shinobu supported each other so as not to collapse to the ground. "I didn't expect you guys to be so capable that you still haven't thought about quitting. In that case, I'll give you a choice." Mizoe said: "The strongest 'Pillar' of the Demon Slayer Corps, Gyoumei Sadomasuma, seems to have the idea of ​​guiding you. You can choose to go to his side. By the way, he is a very tolerant person and will not let you be as tired as you are now. You may become a new 'Pillar' in his hands, but you will only be an ordinary 'Pillar'." Kanae Hucho and Shinobu Hucho looked at each other. They had heard about the meaning of "Pillar" in the Demon Slayer Corps, which is a symbol of strength. "but……" Mizutsu changed the subject and continued, "Our enemies, the demons, are more powerful than the Demon Slayer Corps. Even the so-called 'pillars' have died at the hands of demons. In fact, in the past hundred years, we have not killed any upper-rank demons." "You will become stronger in the hands of Xingming of Beiming Island. This is only natural. As long as a person is tempered by his teaching methods, he will become stronger. But you cannot surpass him, or even reach one-tenth of his level." "Or, continue to stay under my command. I will try to break and even reshape your limits. As for where your limits are, I don't know." Demon Slayer: Kimetsu no Yaiba Volume 156 (Part 4): Chapter Chapter Butterfly Spirit and Mushishi [K] …… “Please continue to guide us!” Hudie Kanae said pleadingly to Yuzhong. "It will be a little easier for you guys if you stay with the Rock Pillar. If you continue to choose me, it will not be as simple as it is now." Yuzhuanjin reminded repeatedly. “We want to be strong and get stronger!” Hu Die Ren also stood up and shouted. "is it?" Yuzhongjin looked at Hudie Kanae and Hudie Shinobu and said, "In that case, it's decided. From today on, you are my 'stepchildren'. From now on, I will be personally responsible for your training."

Hu Die Kanae and Hu Die Shinobu looked up in surprise, then there was a burst of joy, and the emotions in their eyes became more and more excited. The so-called stepson is a person with excellent qualifications who is cultivated by the "Pillar" himself and is responsible for inheriting the position of "Pillar". Kanae Hucho and Shinobu Hucho have the qualifications to become "Pillars", as shown in the original work, but it is a little difficult to surpass the "Pillars" and become the ones who slay the Upper Moon demons. However, in Yu Zhuanjin's opinion, those shackles seemed a little fragile. Under the perfect training method of "Inuyasha", it is not difficult to become a high-level Yamabushi sorcerer, but perseverance and persistence are extremely important. Of course, in Yu Zhuanjin's eyes, it doesn't matter if there is no perseverance and persistence, she just hopes that the person she chooses has that kind of character. …… Early the next morning, Mizozu found the rock pillar, Kyōmei Hirame, and asked him to do him a small favor. Only half an hour later, Beimingyu Xingming came back holding a one-ton boulder high in the air. "Your task is to break it into pieces with your knife." Yuzhongjin raised his hand and pointed at the boulder. Hudie Kanae and Hudie Shinobu were both shocked when they saw this. It's impossible to cut rocks with a wooden sword. However, Yuzhongjin snatched the wooden sword from Hudie Kanae's hand and silenced the sisters' attempts to refute with one strike. 疾！ The power of wind is concentrated in the blade of the wooden sword. The rock was cut into two sections. So strong! Hudie Kanae and Hudie Shinobu were amazed. "Some ghosts' bodies are harder than rock or even steel. If you can't even do this, don't even dare to imagine it..." Before Yuzenjin could finish her words, Hudie Kanae took back her wooden sword and started chopping at the rock. But the harder you push, the stronger the recoil force becomes. "Don't just use force. You must adjust your breathing until there is a feeling in your body that you don't even understand. That 'qi', press it into your hand, condense it on the blade, and then swing it towards the target in front of you." Yuzenjin was reminding them of the techniques, but the young Hudie Kanae and Hudie Shinobu found it difficult to understand. What is force? What is qi? And how to control it? This kind of thing can only be understood by the other party on their own. All Yu Zhuanjin could do was try to guide and amplify the deepest feelings of the Hu Die sisters. While watching the hard work of Hudie Kanae and Hudie Shinobu, Yuzhong Tsu was looking at the Shikigami cards in their hands.

R-level Shikigami Butterfly Spirit, R-level Shikigami Insect Master. It just fits both Butterfly Kanae and Butterfly Shinobu. The basic teaching is really too slow. Even if you are excellent, it will not be accomplished in three to five months. Although Yuzhuanjin has patience, he has no time. After all, she herself is only a novice and still needs experience to become stronger. Besides, why not use a shortcut if there is one? Ever since. After both Hudie Kanae and Hudie Shinobu had a minimum understanding, Yuzhong Jin took advantage of the curtain of night to give both cards to the past. - [Real name: Hudie Kanae (N)] 【Level: 2】 [Attribute: Unable to awaken] [Attack: F]——[Life: E] [Defense: F]——[Speed: F] - [Real name: Hu Die Shinobu (N)] 【Level: 1】 [Attribute: Unable to awaken] [Attack: F]——[Life: F] [Defense: F]——[Speed: E] - Neither of these sisters is outstanding in attacking. It turns out that I have no choice but to find another way. On the second day, while Kanae Hudie and Shinobu Hudie, who were blessed with the power of the Shikigami, were practicing basic breathing techniques, they felt the hot breath in their bodies. They immediately realized that this was the familiar "qi" that Yuzuo Tsutomu mentioned, so they hurriedly picked up the wooden swords and chopped at the boulder. Clang! It was clearly just a wooden sword, but when it collided with the boulder, it made a metallic hissing sound. In a flash, two marks appeared on the boulder. Although they failed to break the target directly, the ten-centimeter-deep cut still declared their success. "Master! We, we succeeded!"

Having made progress, Hudie Kanae and Hudie Shinobu couldn't wait to run to Yuzenjin to report the situation. It took him less than ten days to learn the basic application of the breathing method. This speed is faster than any other Demon Slayer Corps in history. "Now that you've found the feeling, why not take the opportunity to get familiar with it?" Yu Zhuanjin first poured a basin of cold water on him. "sorry."