Thank you to Darkwing Marisa for the tip, thank you for the tip of Little Purple Sauce, thank you for the pseudo-ellipsis of a thousand faces that is on the verge of collapse, thank you for the tip of the red angel, thank you for the tip of the word, and thank you to all the readers who still insisted on feeding while their front teeth were playing dead...... Thank you all for your support~

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It's Saturday, and elementary school students like Dongdong are supposed to have to go to school for half a day to taste the sweet taste of the holiday, but the little guy doesn't have to go to class now.

Dongdong doesn't have to go to class every Saturday morning because he is not in good health and needs to go to the clinic every Saturday for a check-up.

A note for leave of absence was placed on the homeroom teacher's desk from the first week of school, and even a doctor's certificate was attached to show that the little one was indeed going to the hospital and not snuggling up at home.

Of course, this physical examination is necessary for the little one, not to mention the 'reverse development' disease in her body.

Don't forget, Knock Knock has been caught in a harsh prison more than once, and has even been subjected to human experiments by the undead.

Add to that the experience of almost dying several times...... So now none of her guardians dare to guarantee Dongdong's health.

The person in charge of this aspect of the inspection is the head of the secret service company.,It's been several volumes and hasn't appeared for several volumes.,Ivan-su who is about to become a transparent person.。

I used to think that the name of this doctor and the guy were similar, but now I feel that these two people are very similar." ’

The doctor walked into the equipment room with Dongdong, and the spiral boy who was standing outside and waiting was a little bored thinking about this question.

It's just that this doctor doesn't have the same great skin as that guy, and he looks like an ordinary older youth. ’

By the way, a certain spy has been unceremoniously classified into the range of middle-aged people by the two little ghosts in the family.

'Wait! In kanji! The difference between Yi and Yin is a herringbone, I see! That guy isn't human. ’

The alien is trying to understand Chinese characters on his own, and accidentally touches on his friend's secret...... Probably?

Height, weight, blood pressure, pulse, facial features, auscultation, blood tests, these are all necessary tests every week, and every three months Dong Dong also needs to undergo radiological and ultrasound examinations and mysterious examinations conducted by her mother.

If you change to a suspicious child, you will already wonder if you have a terminal illness.

"Come on~ knock knock...... Stretched out a hand. ”

The doctor said to the little guy with a thin needle and a pleasant face.

"Hmm."

Knock Knock reached out cleanly, allowing the doctor to prick her fingertips and leave a test sample on the small pick.

"Knock knock, you're so good. I knew that I would have left you to raise it myself. Cheap for nothing, Ning Yi, that guy ......"

The doctor carefully placed the sample in the storage box and said to the little one in a joking tone.

If the agent hears it, he will definitely cry and pounce on him and hug his boss's thigh and cry.

"Knock knock and forget it! I still have two more goods in my house! Which one do you always fancy and take it away! It doesn't matter if you take them all! ”

It's a pity that this spy is currently on a mission, and the last operation was just a Resident Evil of fighting zombies in the city, and this mission is the rhythm of 'Metal Gear', I don't know if the agent can meet the turban uncle in the leotard during the operation.

“…… Everyone is tired, mom ~ Ning Yi ~ Yin Wensu big brother ~ Youshi ~ Everyone has their own things to do. ”

The little guy replied earnestly after hearing the doctor's words.

"Everyone is so tired but they still have to take care of me, I can only reduce everyone's burden by acting better and working harder."

Obviously, this girl only understood the first sentence of the doctor, and the next two sentences did not quite understand the meaning of the joke.

But the doctor was just a small talk.

"It's not good to be too well-behaved, and occasionally show rebellion to attract the attention of adults."

"Rebellion?"

Dong Dong tilted her head in confusion with her fingers, she didn't quite understand the meaning of the word, and the little guy decided to go back and look up the dictionary.

After the examination, Yush took the little one home, it was only ten o'clock in the morning, and the examination did not take much time.

The little guy sitting on the sofa in the living room in a daze suddenly remembered something, and his little face suddenly turned bitter.

"Uh......h It's time to take your medicine. ”

The kind of medicine that I eat when I practice the Demon Breaking Arrow has to eat three times a day, one in the morning, one in the afternoon, and one after practice.

Dong Dong, who is not afraid of any bitterness of the skin and flesh, is very afraid of this taste signal from the base of the tongue, and the sensitivity to sweetness caused by eating sugar for a long time brings a lack of resistance to bitterness.

Usually the little guy who is only scared to cry when he is faced with a 'very, very terrible thing' will be teary-eyed by a little medicine that is not too bitter at all.

Just as Dong Dong closed his eyes and was about to pour the medicine into his mouth, a visitor suddenly knocked on the door, and the sound that followed made the little guy's hands tremble.

"Okay, who are you looking for?"

Yosh, who opened the door, asked in a voice that didn't rise or fall.

"I think now you'd better look back at Knock Knock, she looks ...... Very excited. ”

The dark-haired boy outside the door replied in an equally undulating voice.

As for Knock Knock...... Our poor Knock was kneeling with his head on the floor, the little guy holding his mouth in one hand and banging the floor with the other.

'It's so bitter! It's bitter! It's bitter! It's bitter! QAQ’

Yush looked at Dong Dong, then at the small medicine bottles scattered on the ground beside her, and suddenly all understood.

He hurriedly ran back to the kitchen to find the honey water that was prepared every day from the refrigerator, but when he came back, the spiral boy found that the strange guy had very consciously moved the big bag and small bag into the living room, and he didn't see it at all.

'Who is this stupid earthling?' ’

Yoush frowned slightly, but he didn't know that the other party was turning a similar idea in his heart.

'Where did that mortal come from?' ’

I can't care so much now~ It's important to save Dong!

As soon as the honey water arrived, it was poured into his mouth with Dong Dong's life, and the almost empty HP rose at a variable rate with the naked eye. (Kouhu)

It was only then that Yosh turned his attention to the guests again.

The visitor lifted his eyes and said to meet Youshi's ill-intentioned gaze.

"My name is Chu Xuan. Since you're here. I guess you've heard my name from someone's mouth. ”

"You are Chu Xuan? You're the ...... of Knock Knock."

"Brother! Is Ni Swollen coming? ”

The little guy interrupted the two of them very coincidentally, but she is not in a good situation now, her tears are still there, and her tongue is bitter and she can't speak.

"I haven't seen you since I delivered you to that man, not even contact."

Originally, it was not only Chu Xuan who came this time, but also his professor father.

This father and son finally finished the research of a secret project, and were about to come over to take a look at Dong Dong during this time, but it was so good that the neighboring country quietly exploded alien technology, and the new research project was immediately assigned, and a national treasure-level researcher like Chu Xuan and his son could not be absent at all.

So the old man was full of enthusiasm and devoted himself to the reverse engineering of the anomalous technology of the neighboring country, but Chu Xuan himself insisted on visiting his 'sister', the visit time was only one day, but he had to follow his father to work.

Needless to say, this is still Yoush's pot in the final analysis, who let him dig a hole in the forum and not fill it! How many vacations have been pit for the geoscholars!

Now that it was confirmed that the other party was not a suspicious person, the atmosphere was naturally much better, but the conversation between these two people was still stiff.

"There are a lot of people out there, and they should all be soldiers...... You brought it here? ”

"They're all protecting me for work, so you should be a member of that company too, right?"

"I'm not, I'm just in charge of taking care of Dongdong during this time."

As the master, Youshi poured Chu Xuan a cup of tea and replied in that undulating voice.

"Sec'ret-Ser'vic'e?"

The alien boy didn't affirm or deny, he just pretended to sit in place and drink tea.

Because he didn't know what those two words meant.

"It must be very hard and ...... to take care of this silly child. Boring, right? ”

Chu Xuan said again that in the information he obtained, the members of the spy company were basically guys who would rather die than be bored.

"No, Dongdong is very well-behaved and obedient, taking care of this child is much better than what I used to do."

The previous days that Youshi was talking about here were the apocalyptic circumstances he had experienced in his homeland world, but Chu Xuan didn't know it.

He felt that it was some kind of personal quirk of Yush.

After all, Ning Yi was too tired of taking care of Dongdong alone at that time...... Treatment has now been completely abandoned.

Chu Xuan looked at Dong Dong, who was sitting on the side and seriously holding a pen and writing and drawing in a notebook.

The little guy who noticed the sight looked up and smiled silly back, then went back to his homework.

"This child, just like when I brought her back, is completely unchanged."

Hearing this, Yush shook his head.

"No, she's grown."

"Really? In that case, it would be a shame not to have a chance to watch her grow. ”

The atmosphere fell silent again, after all, neither side was a person who liked to talk much.

"After seeing how well she is doing, I feel much more relaxed."

Chu Xuan stood up.

"Then it's time for me to leave. It will also take a lot of time to meet Yanjing from here. ”

The little guy who was still doing his homework seriously just now raised his head when he heard this, and looked at Chu Xuan with a little disappointment.

The little guy was still thinking about letting Chu Xuan look at him after finishing his homework.

After all, when they got along with each other in the research institute before, Chu Xuan especially liked to let Dongdong write some messy questions to do tests, so the little guy naturally thought that this brother liked to read the homework and tests she wrote.

Apparently she was wrong.

Chu Xuan came suddenly, and he left very simply.

Before he could think about what to say, he was ready to leave.

As a last resort, the little guy had to chase after the door in three steps and two steps.

"Find ...... Did you find it? ”

"What did you say?"

Yu Shi was confused by the little guy's words, and Chu Xuan seemed to remember something, but he asked in the same unclear tone.

"Found what?"

"Found ...... What is left in the sky? ”

"Not yet, but that doesn't matter anymore."

"Huh? But if you don't get it back, won't you be sad, brother? ”

"No, I don't feel bad."

After leaving an inexplicable conversation, Chu Xuan left.

The little guy was confused, and Yush looked at the various large bags and small bags that the other party had brought when he came.

It's all food, and it's a very high sugar type.

This guy is really familiar with Dongdong's habits. ’

The sudden arrival of the rare guest did not disrupt the family's routine, and the time quickly reached dusk.

Dongdong looked at his watch, it was time to take medicine again.

……

Boom!

The door of Ning Yi's house was pushed open, and a guy who had returned from a business trip walked in happily.

"Hey! I am back! I've been away long enough this time. Knock knock ~ Did you miss me? ”

“…… Knock knock? ”

The empty vial fell to the ground, as if to tell people what had just happened.

Knock knock, the remnant machine minus one.