"How did boy know? Can you tell me? I am very interested in it," she said.

"No, no negotiation," Ryuto replied firmly with half-closed eyes.

"Heartlessly rejected, huh? The boy is quite decisive," she remarked.

"You haven't even told me your name, yet you want me to tell you first? You're quite clever in this deal. Anyway, if you want to know, tell me your name first," Ryuto said.

"While there is no problem with telling you my name, big sister is just not sure about why the boy is asking. After all, big sister can't guess what the boy is thinking now," she answered, once again examining the young boy in front of her, hoping to see something from his reaction. However, Ryuto just looked bored.

"What? So that's it. How should I put it? I can only say that you're overthinking," he said.

"Huh? Overthinking?" For the first time, the young woman's voice didn't match her age.

"Yes, the reason I wanted to know your name is nothing special. After all, a name is just a code. Since I don't know your name, I can only call you 'you.' Knowing your name would at least allow me to address you properly. Besides, I'm not asking for your phone number, so there's no need to worry about me bombarding you with messages," he explained.

"..." The young woman was surprised by his overly innocent intention and widened her eyes. After a moment of silence, she said, "Fioris Alina."

"I see. I'll remember it for now, since I might need it later," Ryuto smiled, intentionally calling her by her name.

"I can't believe you completely trust me without any doubts, boy," she said.

"Well, it depends on self-awareness. If you give me a fake name, I would have to call you by that fake name in the future, as long as you can handle it," he replied.

"That would have been heartless. Luckily, I didn't come up with a random name," she said.

"Is that so? Then congratulations, Fioris," Ryuto said with a smile, deliberately using her name.

Feeling an inexplicable anger, the young woman prepared to counterattack.

"It seems like your way of addressing me is a bit wrong," she said.

"What's wrong?" he asked.

"In theory, I am older than you, so our relationship is relatively good, although not that close," she said before Ryuto cut her off.

"No, we don't have any relationship," he interrupted.

...

Ryuto really doesn't give anyone a way out.

The muscles on the young woman's face twitched involuntarily as she thought about this.

"Well, let's not talk about that. Since I am older than you, shouldn't you add something on top of that, like... calling me sister or something?" she suggested.

Although she wanted to say the last few words, the young woman held back.

It felt embarrassing to say it herself, but it was already enough for the boy.

"Ah, you're talking about that? Sure, that works," Ryuto scratched the back of his head and said impatiently.

"In that case, let's just call you Fioris Alina directly."

"Huh?"

After the brain comprehended this response,

"Why did it turn out like this? How exactly did you understand and come to this conclusion?"

Fioss Alina exclaimed loudly and excitedly.

"No, wasn't it what you said? To add something on top of what was just said, isn't that correct?"

Ryuto asked in a perplexed manner.

...

To think that something like this could happen, Fioss Alina really wants to find a hole to crawl into right now...