Afterwards, the young girl spoke again, her voice filled with confusion.

"But for some reason, my brother's mysterious condition suddenly disappeared."

Hearing this, the girl with long dark hair seemed to understand something and smiled slightly.

"Perhaps... the previous condition was just a pretense by your brother."

"Huh?"

"Maybe he did it to free you from your parents' control, after all, they weren't your real parents."

"Yeah, my real parents died in a car accident when I was very young. With no other relatives, I ended up in an orphanage. Then, a couple brought me to my brother's house. Later, I fell ill and it turned out that my brother's parents were actually my parents."

The young girl explained.

Upon hearing this, the girl with long dark hair could only give a bitter smile.

"And then, he chose you over his parents and sister? That's just like your brother."

"Yes, because my brother has always been a genius since he was young, so even without his parents, he didn't have any financial problems. Instead, it was more like his parents were using his talents to make money."

"So, once he lost his talent, his parents naturally abandoned him. I guess that's what your brother thought."

The girl with long dark hair said with a smile.

"...After that, I was admitted to the best hospital and received the best treatment. But at the time, my illness was somewhat special and couldn't be completely cured. So my brother, afraid that I would feel bored in the hospital, brought me home for treatment instead. He even hired a specialist doctor and nurse for me, and he himself would come to accompany me every day, though he would always leave silently after asking a few questions."

"What about the rest of the time?"

The young girl thought for a moment.

"I'm not sure about that. My brother would just lock himself in his room all day, surrounded by towering stacks of books."

"..."

The girl with long dark hair rested her chin on her hand and began to ponder. The young girl's narrative continued.

"Finally, about three years ago, my illness suddenly disappeared on one night. I only realized it when I woke up the next day. It had been treated for so long without any improvements."

"So, I guess your brother had been trying to find a solution all that time. That's why he spent most of his time reading books."

"Probably. After all, my brother is a genius."

"That guy really did everything he could for his sister."

In the girl with long dark hair's voice, there was a hint of helplessness. She then reached out and gently stroked the young girl's head again.

"Everything your brother did was probably for you, because even though there's no blood relation, you are his only family in this world, the only one he can trust."

"Yes, I know that. My brother has always treated me as his sister... always..."

The young girl said, and for some reason, her eyes showed a hint of unexplained sadness.

"Though he may be a blockhead, I just can't bring myself to hate him. In fact..."

As the girl with long dark hair said this, she changed the subject.

"And that night when I met your brother, I will never forget it. So, I won't leave Mari, and I won't give up either..."

The girl with long dark hair hesitated to speak until the very end, but the young girl suddenly exclaimed.

"Oh no, I almost forgot to tell me how Xiao Li and the elder brother met," she said.

The girl with long dark hair suddenly started pretending to be innocent.

"Really? Let's talk about that later," she replied.

"That's not fair, I already said it," the young girl pouted in protest.

"Let's call it a day for now. It's getting late, so let's find a 24-hour restaurant to have dinner and then go back to the hotel," the girl with long dark hair suggested.

"By the way, I've always been curious about how Xiao Li has so much money, even though she doesn't have a job," the young girl asked.

"Of course that's your brother's doing," the girl with long dark hair replied, taking out a VIP card from the bank.

"But he promised to take care of everything. Besides, the money in here is enough even if it's just the interest. Plus, he wouldn't complain if it was spent on his cute little sister, right?" she continued.

"He should be responsible for other things too," the girl with long dark hair muttered discontentedly.

The young girl exclaimed even louder when she heard that.

Of course, she didn't hear the girl mutter under her breath.

"Xiao Li, you know the password, I didn't know," the young girl said.

"I guess your brother forgot to tell you. Anyway, let's go," the girl with long dark hair replied.

"..."

The young girl didn't dwell on it and followed the girl as they walked towards a certain shop.