However, he ruled out that possibility himself.
The reason is indeed related to Ai's name, or more accurately, to her nickname.
"It doesn't matter." Ai glanced at Ayumi, who looked a little dejected because she couldn't remember her nickname, and said calmly, "You can just call me by my name."
"Huh?"
The surprise came somewhat suddenly, and Ayumi didn't react for a moment.
"If I'm not mistaken..." Ai looked at Ayumi and asked, "You've always wanted to call me that, haven't you?"
"Really?" Ayumi reacted, her smiling face instantly filled with joy, and her cheeks flushed a light pink with happiness.
"Hmm." Ai nodded, then asked, "Haven't you always wanted to call me that?"
After receiving Ai's approval, Ayumi finally managed to say the nickname she had tried to use many times over the past few days but had failed.
"Ai-chan!"
After shouting, Ayumi couldn't help but laugh out loud because she was so excited.
Seeing Ayumi so happy because of a nickname, Kōyū's face showed a gratified smile like that of a proud father.
He knew that in Japan, you could tell the true nature of a relationship just by how two people addressed each other.
For example, the "kun" that Professor Agasa uses is not only used to address male adults, but also as a term of address from an older person to a younger person.
The "chan" that Ayumi calls out indicates that the two have a good relationship and can be considered friends.
In other words, when Ai agreed to let Ayumi call her by her nickname, she accepted Ayumi as a friend who was much younger than her.
...
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