When Oz returned home, he found a letter in his email. What surprised Oz was that the letter was sent back by Oz's father in this life! Oz had always thought that the couple had already died.

Oz opened the letter and saw the content in it, he became embarrassed in an instant.

The main contents of the letter are as follows:

Son, do you want a sister?

Whether you want it or not, you have an extra half-sister.

But your mother didn't know you had a sister before, so my father was being chased by your mother.

Son, help! I am innocent! This is the first time I have heard of this! I really didn’t know about it before!

...

…………

"It seems that this couple didn't go to slay the dragon." Oz curled his lips and came to this conclusion calmly. If the two of them really went to slay the dragon, how could they be so happy to play the hunting game now?

Well, it would be fine if I wasn't dead anyway. Oz put away the letter.

"Where did Mona go, who is always noisy?" Oz looked around in confusion. The house was quiet, and Mona and Kasha didn't know where to go.

After Oz walked around the house, he finally found Mona in the study who was teaching the Kasha sisters some common sense knowledge.

In the study, the Kasha sisters were sitting upright on the chair like a good student, while Mona was holding a teaching stick and standing in front of the blackboard to teach the Kasha sisters. On the blackboard, a title was written in chalk, "All common sense when using the bathroom" was written!

Mona: "...When rubbing the back of Lord Demon, you cannot use your hands! You should first put the foam on your chest, and then use the foam-filled breasts to replace your hands, and directly rub the back of Lord Demon! This is the etiquette when taking a bath, the rule, and you must remember common sense!"

"Common knowledge, your sister!" Oz rushed into the room and kicked Mona away!

"Ah!~" Mona screamed and flew directly to the wall, then fell to the ground.

"Remember!" Mona lying on the ground raised her hand tremblingly and said to the girls, "Women should rub the back of the demon king with their breasts, this is common sense..." After that, Mona fell directly to the ground and pretended to be dead.

The girls nodded very seriously: "Yes, teacher!"

"This is not common sense!" Oz said to the Kasha sisters with a crazy look on his face. "Don't listen to Mona's nonsense. Girls should not take a bath with boys."

Mona: "Not a boy, but a devil!"

Kasha: "It's not a boy, it's the master."

Hayas: "Not a boy, it's the big brother~"

Oz: "Don't just deny other people's gender casually!"

"Hmph!~" Mona got up from the ground and said with a proud expression, "Mr. Demon King, before being a man, you were first a demon, and then a man. Whether you change your gender or become a tentacle monster, before that, you were first a demon!"

Kasha: "The master is a boy, but before that, the master is the master."

Hayas: "Big brother is a boy, but before that, the big brother was the big brother."

Oz looked at the Kasha sisters with a weird expression, turned around and said to Mona, "Why do I feel that they are a little weird? It seems that the thinking mode has become synchronized with you?"

"This is an illusion, Lord Demon." Mona was serious. "SAN value dance only strengthens the spiritual connection between us and can share each other's thinking ability, and at the same time, it will allow them to quickly understand what I explained without cognitive impairment. It has no impact on personality and thinking patterns."

"Your words are simply 'No silver here'! Will they suddenly become like this? Is it true that it is because of that strange dance?" Hearing Mona's words, Oz was able to be sure that everything was the fault of this white steamed bun!

"It's such a rude, it's not a strange dance. SAN value dance is a great ritual created by the tentacle demon Nayaratotip! Even Lord Kami praised this SAN value dance as a genius idea."

Oz covered his forehead: "The Tentacle Demon King... I always feel like I heard something amazing again."

Mona: "My devil, if it's okay, please don't disturb us in class. I still have a lot to teach them!"

"Oh, OK... it's weird!" Oz said very unhappy, "I'll ask you to teach them some common sense, but you've taught them something strange!"

"Although you can't understand it for the time being, these are very important common sense!"

"I always feel that your definition of common sense is somewhat different from common sense in the ordinary sense."

"Well, forget it." Mona curled her lips, "Anyway, the important common sense has been handed over to them, and the next step is to learn about the maid profession related knowledge."

Although Oz was relieved to hear that he was not teaching those strange common sense, he did not dare to be careless: "Can I stay and listen?"

"Yes. But the devil who didn't skip the SAN value dance together may not be able to understand what Mona said."

"It doesn't matter. I'm just trying to monitor you and prevent you from continuing to teach them some weird knowledge."

Humph! Lord Demon King, you are so naive! Mona ignored Oz anymore, wiped off the blackboard, wrote the word "maid", and then started talking to the Kasha sisters.

"The so-called 'servant' is a person who serves a specific object. Because as a maid, one must first decide the object of service and then serve him wholeheartedly..."

"The key to determining whether a girl is a maid is whether she has a 'heart of service'. Only those who have a 'heart of service' can be considered a real maid. On the contrary, if she does not have a 'heart of service', no matter how many skills related to maids are proficient, she is just an ordinary person..."

"The 'heart of service' is the source of the maid's power. If the power of the priest comes from faith in God, then the power of the maid comes from his own 'heart of service'. The clergy provides faith to God, and God transforms the power of faith and then gives it to the believer; the maid condenses his 'faith' in his master into a 'heart of service'. The 'heart of service' will transform the maid's 'faith' in his master into a 'heart of service' and feed it back to the maid. In a sense, the 'heart of service' is actually an alternative 'god character'..."

"Since the 'faith' in the master is all used to gather the 'heart of service', the maid is not strong in the early stage, but when the maid has a true 'heart of service', its power will increase explosively. If we want to describe the power gap between the two, the maid in the early stage is just a person with faith, and the maid who condenses the 'heart of service' is no less than a true god!"

"The 'heart of service' is the source of power of the maid, but it is not easy to condense the true 'heart of service'. First of all, you must fully trust the master, and have the awareness of sacrificing everything for the master, taking the happiness of the master as..."

"After all the above conditions are met, a seed of the most basic 'heart of service' will be produced in the maid's soul. After having the seed of the 'heart of service', it can barely be considered a formal maid. At this time, you need to focus on honing your own skills. Perfect housework abilities, cooking skills that can make any chef ashamed of cooking skills, extraordinary combat skills, space-based magic that can take out anything from puzzling places when necessary, driving any means of transportation, and financial management ability that can make money..."

"Many professional maids can reach this level, but they have never been able to transform the seeds of the 'heart of service' into the true 'heart of service'. Because in order to transform the seeds, in addition to everything mentioned before, they must also understand all the thoughts and thoughts of the master, and dedicate their own body, soul, heart and everything else, so that they can completely become part of the master. Most maids stay at this stage because they cannot give up on themselves and stop moving forward, so there are very few true maids who condense their heart of service even in the vast universe!"

...

…………

Perhaps because of Oz's presence, Mona did not teach the Kasha sisters any strange "common sense" this time, but explained it very seriously. But the content Mona explained became more and more mysterious, and it was even more irritating than the novel! Superman and other things are simply weaker than it is!
Chapter completed!