I am a brainwashing doctor, and my sister is a magical girl.

Chapter 270 Xingyin: My sister is absolutely not allowed!

Chapter 270 Xingyin: My sister is absolutely not allowed!

(Subtitle: Xiaoye Xiahua: Brother Xuanyi, do you know what the biggest advantage of marrying my sister is? That's right, it's me!)

So, the next day, the Black Rose Gothic Classical Martian Art Exhibition took place.

Tickets cost 65535 yen, but the internal price is only 500 yen.

At the entrance of the art museum, the professor greeted the Saya sisters with a refreshing smile.

Xingyin wanted to apologize to the Doctor, saying, "This child insisted on coming along, and I couldn't do anything about it." Before that, Xia Hua had already made a cute little leap into the Doctor's arms and said this happily.

"Brother-in-law~ It's been so long since we last met, have you missed me?"

After she finished speaking, she raised her head and looked at Lin Xuanyi with her big, adorable eyes. She looked incredibly cute, which was unexpected.

Lin Xuanyi was somewhat charmed by it, and even couldn't help but have some not-so-good thoughts.

Of course, the biggest difference between a person and someone born is that a person has self-control while someone born doesn't. So, although the professor felt a bit like he was spinning a stun gun at high speed when faced with the adorable Natsuki, nothing actually happened in the end.

Even though Xia Hua had made various flirtatious or even invitational advances towards the Doctor, it didn't matter.

Throughout the date, the Doctor and Xingyin were happily looking at various exhibits, while Xia Hua was happily visiting Lin Xuanyi's exhibit.

She said, "Brother Xuanyi is so handsome."

"Brother Xuanyi knows a lot."

"Brother Xuanyi is amazing. He's so young and he's already a department head, and at a super giant like Black Rose."

"Keep up the good work, Brother Xuan Yi!"

"Brother Xuan Yi is eating ice cream (his allowance for buying ice cream was given to him by Xing Yin)."

"Brother Xuan Yi, ah~"

Lin Xuanyi: "

The professor was a bit confused. How could two sisters who lived together be so different in their character?

Xingyin: "I don't understand either. My sister is so disobedient and naughty in front of me, why does she become so well-behaved in front of the Doctor?"

More importantly, this was supposed to be a rare intimate date between me and the Doctor, so why did I have to be so foolish as to bring this little bear girl along? I'm such a jerk.

Thinking about it now, I'm just ridiculous. I should have kept my actions a secret from this idiot sister.

This was my first mistake.

Next, I should have ignored the other person's crying, tantrums, and threats of suicide instead of being soft-hearted and bringing this guy to see the Doctor.

"I was wrong, I was really wrong, if only I—"

At this moment, Xingyin was wallowing in self-pity. Meanwhile, the Doctor, watching the two sisters like this, found it quite amusing.

Watching these two is no more entertaining than watching Martians fight Earthlings.

Through these observations, the professor also confirmed some things. The two sisters in the Sayo family had a very good relationship. However, at the same time, Sayo's younger sister seemed to be going through puberty, showing disobedience to her older sister's authority, thinking that her sister was stupid, and so on.

Do you know what the most crucial thing is? It's that Xiaoye-neechan really seems to be an idiot.

Most of what the younger sister, Xia Hua, did was to help her older sister improve her image. After learning just how powerful the doctor was, Xia Hua developed an extremely strong sense of anxiety.

She wondered what her silly older sister had done to deserve such a high-class husband.

Although the Doctor is such a person, he certainly wouldn't let Xingyin be his main wife, and he certainly wouldn't only have Xingyin as his woman. If that were the case, Xia Hua would find it very strange.

Even so, Xia Hua still felt that her older sister was about to become the loser in this game of love.

If she can't find a way to increase the doctor's affection for her, then the ultimate fate awaiting Haruna is to be played with by a super rich and handsome guy, who will then happily take advantage of her and then deny everything, ultimately leading to her tragic end.

The doctor also noticed Natsuka's worries and therefore raised his opinion of her. If it weren't for the bond between the fallen magical girl and the villainous executive, and only looking at the surface, Natsuka's judgment would undoubtedly be correct.

So, how do we solve this problem? —Although there's no need to solve it, Xia Hua still tried her best: "Although Brother Xuan Yi is very gentle, he doesn't seem like a good person at all. And my sister is too stupid; she doesn't know how to please a man at all, so I'm the only one who can go to the battlefield."

Xia Hua made this decision with a heavy heart.

Then, about half an hour later, while having lunch at the Mars Art Exhibition restaurant, she asked the doctor this question: "So, Xuan Yi and the sister are dating, right?"

Yes, that's right.

"So, does Brother Xuan think his sister is great?"

"Yes, that's good."

"So, Brother Xuan Yi likes girls who are a bit slow-witted. Hmm, if they're a bit slow-witted, they're easier to please."

However, the less intelligent ones might do some annoyingly silly things. But it's okay, Natsuka will help keep an eye on her older sister.

"Hey, Xia Hua, what are you talking about?" Hearing her sister say that, Xing Yin was a little embarrassed: "Apologize right now."

"The idiot is the older sister, don't interrupt." Xia Hua said this to her older sister very seriously, which made Xing Yin angry. Who is my sister or am I your sister? How dare you talk to your older sister like that?

Most of the time, Xingyin has a good temper, but for a moment she couldn't help but want to breathe on her sister.

Of course, before that, the professor said to her, "Wait a moment, Haruna, let's hear what Natsuka has to say."

"Hmm~"

So, under the disdainful gaze of Natsuka-chan, Koya Haruna really did shut up obediently, just like a doting little wife.

This scene made Xia Hua even more convinced that things weren't going to work out, so she said to the professor, "So, Brother Xuan Yi, although I'm stupid, lazy, and can't make money, and I'm just average-looking..."

'

—Summer flowers!

I already told you, sister, don't interrupt!

Xiaoye Natsuka said, extremely annoyed, "If you keep doing this, I'm not going to stand up for you anymore!"

Xingyin: "Of all the things you've said, which one of them was in my favor?"

Xia Hua: "Of course, it's the next line—Brother Xuan Yi! Do you know what the biggest advantage of marrying my sister is?"

Lin Xuanyi: "What is it?"

Xia Hua: "Of course it's me!"

Xiaoye Natsuka proudly held her head high and said, "Buy one get one free with these twin sisters! The silly older sister comes with a bonus of her clever, gentle, cute, and quirky younger sister, Xiaoye Natsuka. How about it, brother-in-law? Aren't you tempted?"

Upon hearing this, Xingyin couldn't help but burst out laughing.

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