Chapter 421 is a rare blue.

More than a month ago.

That is, a few days after Asti, who was sent to the United States, returned.

Bertrand had Gin take him to the outside of Safe House Number One.

Before opening the lab door, Bertrand poked Gin's arm and said with a grin, "Nobody can come in, nobody can."

Seeing him nod, Bertrand only then went into the laboratory with satisfaction.

With a whoosh, the silver-haired boy collapsed onto the bedside, staring wide-eyed at the elderly man wearing an oxygen mask...

"Why did you send my Asti to the United States without my permission? Even if he has ulterior motives towards the organization, it's up to Xiaoye to deal with it."

Karasuma Renya coughed and shook his head slightly. "Of course not. There's a reason I sent him to the United States."

Bertrand raised an eyebrow in confusion, kicked off his shoes, and unceremoniously climbed onto the bed and sat cross-legged.

Fortunately, the bed is wide enough.

What could be the reason?

Seeing the curious boy, Karasuma Renya sat up.

Seeing this, Bertrand picked up a pillow and stuffed it behind his back.

Karasuma Renya smiled and reached out to pat his head. "Because there are incredible powers in this world."

"Incredible power?" Bertrand tilted his head curiously.

“That’s right.” Karasuma Renya nodded and began to explain to him, “There is a power in this world called magic.”

"Magic? Like the power to transform in cartoons?" Upon hearing this, Bertrand's eyes lit up instantly.

"Pretty much." Karasuma Renya laughed and explained the meaning of 'magic'.

Bertrand looked like he was overwhelmed with mental energy. After taking some time to process the new knowledge, his eyes lit up with anticipation. "So, magic can make you immortal?"

Karasuma Renya nodded firmly.

"Then how did you know that magic exists?" Bertrand Sir, with his inquisitive nature, continued to press for an answer.

"Forty years ago, I invited some scholars to help me find the treasure of Twilight Villa, which is Twilight Villa itself. Among those scholars, there was a magician whose abilities could help me achieve immortality."

"Oh~ so it doesn't matter whether we find that so-called treasure or not, you just killed all those scholars, right?" Bertrand pressed his hands together against his cheeks, his eyes sparkling.

Karasuma Renya smiled and nodded. "That's right. That magician did help me find the 'treasure' back then, but I don't need it anymore."

"And then what?" Bertrand moved closer to him curiously.

Karasuma Renya stroked his head and continued with a slight smile, "The magician gave me a gem before he left. That gem can indeed prevent my body from aging, but to say that I can live forever is still a stretch."

"Later, I sent people abroad to search for that magician, but to no avail." He sighed helplessly as he said this.

Bertrand rubbed his palm against his hand and asked doubtfully, "Can we find him? That magician, after all, people like that usually don't reveal themselves easily, right?"

“You’re right, but I know that the mage’s hair color is a very rare blue.” Karasuma Renya’s lips curled into a slight smile.

"Blue!?" Bertrand's eyes widened in shock upon hearing this.