Ultra Star

"Muzan! Die."

Cui Cheng chased Muzan in armor, and Muzan had to run in order not to expose his identity.

"Coward! Don't go! You fought me head-on, and you still have the nerve to say you are invincible? You are just a coward who only knows how to run away!"

Cui Cheng’s roar failed to stop Muzan and he finally escaped.

“Don’t run away, you half-human, half-ghost transgender, you incompletely evolved life form, you pale-faced man with kidney deficiency, stop right there and fight me! Damn it! Damn it! What power of an Ultraman, what special armor of a Valkyrie, what hard training, you can’t even catch a coward who’s running away! Hippolyte, Muzan Kibutsuji, I’m going to catch you! I’m going to catch you!”

After the mission was over, no one blamed anyone too much. Apart from a few complaints, Cui Cheng didn't say anything. However, he simply tidied himself up and started training.

"Is this okay? The weight is already heavy."

"Girls, please add some more." Cui Cheng in the Butterfly House held his dragon spear and asked the children in the Butterfly House to add weight to himself at the tip of the spear. "We must continue to practice, otherwise we will never be able to catch up with the ghost king. We are not sure where Hippolyte is hiding, and we cannot reduce the sandbags on our feet! Girls, please add more sandbags."

After holding a gun for a while, Cui Cheng began to train in fighting and weight-bearing in his daily life. He did not practice breathing techniques so the physical training had to be more arduous.

"Mr. Cui Cheng!"

"Tanjiro? The other two are my wife Zenitsu and Hashibira Inosuke, right? It's been a while."

The three of them watched as Cui Chengdu, who was also working hard in training, and took advantage of the break to talk to him.

"You are very strong. Fight me. If I can defeat you, I can rival those guys."

"Well, Inosuke, you should rest first, otherwise excessive training will be bad for your health. You may not be able to lift my weight."

After Cui Cheng finished speaking, he stretched out his arms to the three people. After some attempts, they finally succeeded in lifting it after trying their best and sweating.

"I am a person with special powers, so I naturally have to practice twice as hard. But I think it is only a matter of time before you can reach this level of power. After all, I am almost 30 years old as a human, not counting Ultraman's age. By the way, I won't prepare dinner for today. I will go to the lord and try to heal his injuries with my power."

Before dinner, Cui Cheng rushed to the lord's residence and tried to use his own power to treat the disease. However, he was unable to completely cure the disease until almost supper time, but his lord was basically the same as an ordinary person.

"I've shut myself in. I've been training with Senior Gauss for two years, but I'm now like this. From now on, I won't say that it was Senior Gauss who taught me. It will embarrass him."

Cui Cheng squatted in the corner and said.

"It's nothing, thank you Cui Cheng." The lord's heartwarming words made Cui Cheng feel relieved, "This is a curse that accompanies my family. As long as Muzan is not killed, all this will not stop."

Cui Cheng, who was fine at first, shut himself up again after hearing this: "It's all my fault that I failed to kill Muzan. Otherwise, even if the Demon Slayer Corps became a force to stop unknown invasions, the casualty rate would be lower than it is now, and the lord is not getting better either."

"Well...my wife prepared some pastries. Would you like to try some?"

Cui Cheng turned around and asked: "Do you have pancakes?"

The next morning, Cui Cheng went back to the Butterfly House to continue training. Cui Cheng's sandbags were increasing every day. When he had nothing to do and needed to rest, he asked Aligella to take everyone for a ride. In order to be on the safe side, Cui Cheng arranged Black King to be near the lord's mansion. If a ghost came near, even Muzan would be skinned alive.

After a combination of work and rest, the three people who had mastered the breathing method better and better were taken to a high altitude by Aligella one day.

"This is 500 meters above sea level and the air is thin. Practicing breathing techniques here is more effective but a bit more difficult. I'll bring you food. I'm going down first."

Cui Cheng flew down wearing armor and saw Shinobu Kocho.

"Thank you for healing my lord."

"Nothing, I just think good people shouldn't die young. Those three training there is like me carrying a burden, would you consider concentrating on training or I take Chanao with me?"

"Never mind, that kid isn't good at talking to strangers."

"Yes, this is quite troublesome. By the way, is the wisteria flower toxin ready?"

"I am prepared, but that is several times what an average person would be able to do in one go..."

In the face of these Cui Cheng just said: "I don't want to see anyone being corroded by ghost blood, so injecting the wisteria flower poison into my body to emit a purifying light is the best choice. As long as it succeeds, at least I will be sure to kill the ghosts under the Twelve Ghost Moons."

As he said that, he and Shinobu Kocho walked to the laboratory and had Shinobu Kocho inject him with a large amount of wisteria flower poison, but he fell to the ground in pain instantly.

"hateful!"

Cui Cheng has begun to sweat, and even the Avenger Shinobu Kocho can't help but be moved, but after the end, Cui Cheng only said one sentence: "Keep going!"

A day later, Choi Sung was sweating and breathing heavily. Shinobu Kocho looked at Choi Sung and wanted to help him up, but Choi Sung stood up and joked, "Do you want me to learn the Insect Breathing Technique from you? My breathing is really messed up right now."

The two smiled at each other and said nothing more.

"I'm finally on the ground!"

Zenitsu said while taking a deep breath.

"You are too fragile. You will continue tomorrow. By the way, I have contacted the lord to let all swordsmen who have reached your level take turns to train. If you don't want to lose face, then work hard."

"Yoshi! Special training!"

Looking at the expressions of several people, Cui Cheng didn't say anything, but Cui Cheng realized why he had to train these little guys for free. Forget it, since he is a pillar, he must do something. He doesn't know the breathing method, so he can only practice like this.

After a while, the ravens of Tanjiro and the other two came here and asked the three to go to the Infinite Train to carry out the mission.

"This is your first mission after training, come on! This is the transmitter, if you encounter an upper-rank enemy, press the button."

"Ah."

Logically, Cui Cheng should go as well, but because he has to keep an eye on the actions of the Hippolytus, he has to be on standby at all times. But as long as he gets the news that there are enemies they cannot deal with, such as the Upper Moon level, Cui Cheng will rush to support them directly.

Kyojuro also goes to the Infinite Train to carry out his mission.

"As long as Mr. Purgatory is here, everything will be fine. Be careful on the road."

This is Shinobu Kocho's evaluation of Rengoku, but this time Shinobu Kocho probably didn't expect that if it weren't for Choi Cheng's support, Kyojuro would probably die.

When Shinobu Kocho said that Rengoku Kyojuro would lead the team this time, she felt relieved: "He is a man who keeps his promises. I will invite him to dinner when I officially pay him. He will definitely come back."

That being said, Cui Cheng did not train that night and waited all night.