Saruto leaves the world of the Third Founder after defeating him. He says, "I have one day left before I go to the Academy, so I have to prepare myself. It's good that time in the Time Chamber flows very slowly; this will help me train." The days passed quickly in the Time Chamber, and Saruto knew no rest.
Every day he fought, trained, pushed gravity to its limits, and refined his Forming Technique more and more.
In the few hours before going to the Academy, he sat in the middle of the Concentration Room and closed his eyes.
He said,
"It's now... or never."
He tried to go to the world of the Second Founder after defeating the Third Founder and opened his eyes, only to find himself once again on the island that represents the world of the Third Founder.
The sea breeze caressed his face, and the waves crashed against the rocks, but his eyes never left the Founder who awaited him.
The Third Founder smiled and waved:
"Welcome back, Saruto."
Saruto, surprised, said, "Why am I here? Shouldn't I be in the world of the Second Founder?"
The Third Founder replies, "Yes, but I'm the one who summoned you to my world."
Saruto asks, "Why?"
"Because you'll never defeat the Second Founder with your current strength."
Saruto asks, "What do you mean?"
The Third Founder continues, "You haven't even forged your weapon yet, have you?"
Saruto replies, "Yes."
The Third Founder says, "Then you'll never defeat the Second Founder unless you forge your weapon. The Second Founder is incredibly powerful; his energy surpasses that of any Founder who has ever graced the Dark Family. He's even comparable to the First Founder. So, you must first forge your own weapon from the energy of darkness. Even then, you won't defeat him unless you hone your skills and develop yourself."
Saruto says,
"Thank you... I won't let you down."
Then the island world faded away, and he returned to the Time Chamber.
He sat on the floor, smiling for the first time in weeks.
"So, my next goal is to forge a weapon that suits me and my fighting style. Well, so be it."