This sense of shame made her body tremble involuntarily, yet amidst this shame, a strange, indescribable feeling seemed to quietly spread through her heart.

"You only have 30 minutes to eat. Once the time is up, you will be tied up again."

Ignoring what Chikage Kuroba was about to say, Ai took off her white coat and placed it on a shelf to the side.

This was the gift that Yuzuru Nanasu gave her when they first met—a lazy white coat.

She loves wearing it when she's doing experiments; she always feels incredibly comfortable and at ease in it.

"I'm leaving now, I'm going out to play today, I'll be back later to continue playing with my big sister~"

Ai's voice echoed in the basement, carrying a hint of joy.

As her footsteps faded into the distance, the laboratory door closed automatically with a dull thud, completely isolating Kuroba Chikage from the outside world.

At the same time, the red ropes binding Kuroba Chikage's hands automatically untied and slid down.

A huge 30-minute timer suddenly appeared in the air, with numbers flashing continuously on the screen.

[29:30, 29:29, 29:28...]

Kuroba Chikage struggled to sit up from the table, her body numb and stiff from being bound for so long.

She tried to move her legs, but found that they were still tightly bound and she could not move them at all.

She could only move her upper body with limited freedom of movement, which severely restricted her actions.

"As expected..."

Kuroba Chikage murmured to herself, raised her head, looked at the timer screen, and her eyes revealed a hint of anxiety and hesitation.

She knew that these 30 minutes were the only time she could move around, and also her best chance to escape.

But after being toyed with by Ai for so long, her body is now very weak and she desperately needs nutrition to recover her strength.

Hei Yu Qianying looked down at the spirit rice porridge with two small balls soaking in it, and the tempting aroma made her stomach rumble.

She understood that to escape from here, she needed sufficient physical strength; otherwise, she wouldn't even be able to walk, let alone escape.

The bowl of spirit rice porridge in front of him was his only source of strength.

Now we have to make a decision.