She was sleeping very well, he could tell.

He couldn't help but feel a little guilty:

"I wish I had noticed last night."

Just after Kōyū said those words, he felt Ai place her hand on his leg.

Then, he heard Ai cough a few times and say:

"Cough cough... It's not your fault."

"It's because I haven't been paying attention."

She stayed up all night developing the antidote because she wanted to develop it as soon as possible.

This is one of the few things she can help Guangyou with right now.

She is not a pretty face, nor does she want to be one.

Before I met Guangyou, it was common for me to stay up all night or even work through the night on research and development.

She basically has to stay up all night four or five days a week.

Occasionally, in critical situations, I have to stay up all night.

She didn't have anything to do at that time.

You might catch a minor cold when the seasons change or when there are large temperature differences, but you'll be fine after taking medicine.

The pressure was greater and more tiring back then, but now she feels that this kind of life is quite easy and fulfilling.

This was the first time she had ever been so seriously ill because of something like this.

She originally intended to keep it a secret from Guangyou, but unexpectedly she suddenly fell ill.

Upon hearing Ai's words, Kōyū had a different opinion.

He said seriously:

"Alright, stop saying things like that."

"Since you've chosen to be with me..."

"Then I need to take good care of you."

"I don't know anything about developing an antidote, so I can only put you in charge."

"I can't help with developing an antidote, but I should pay more attention to my daily life."

"I was also at fault in this matter; I didn't take good care of you."

Hearing what Kōyū said, Ai felt a warm current welling up inside her.

It's like snuggling up in a warm kotatsu in winter.

Especially after drinking hot ginger soup, I felt warm from the inside out.

Guangyou did nothing wrong in this matter, but he kept saying that he was also at fault.

She could tell that Guangyou genuinely felt he hadn't taken good care of her.

Perhaps in front of others, Kwang-woo's acting skills make it difficult for people to understand what he is thinking.

But in front of her, Kōyū's thoughts were easy to guess.

It's practically written all over their faces.

She didn't argue with Guangyou about who was right and who was wrong.

Instead, she looked at the worried expression on Guangyou's face while drinking the ginger soup he had specially prepared for her.

"How silly..." Ai thought to herself.

This wasn't the first time, and she felt it wouldn't be the last.

She will definitely have this thought again in the future.

...