After entrusting Sasori with the task of making Bumblebee, Anyo began splitting Minato's soul in the soul space.
Although he had taught Minato the Spirit Transformation Technique, Minato could not learn it. Like the Flying Thunder God Technique, the Spirit Transformation Technique required talent even to get started, and Minato clearly lacked talent in this area.
Left with no choice, Anyo could only force the process.
Anyo was very careful throughout the splitting process. Fortunately, he had done it once before, and this attempt went quite smoothly. Minato looked gentle, like a sissy, as Kushina had called him when they were young, but his tolerance for pain was no weaker than Anyo's.
In less than half a day, the soul was successfully split. Fearing that splitting off too much would cause Minato to develop a split personality, Anyo had separated only about one percent of the original soul this time.
Anyo explained this to Minato. "This bit of soul power can only keep Naruto company. It can't use any abilities, and if he's ever in danger, you won't be able to help."
"This is already more than enough, Anyo. Thank you." Sensing the two distinct souls, Minato's eyes held nothing but amazement and gratitude. He had never imagined that Anyo would master such miraculous ninjutsu.
Once he was finished there, Anyo got up and went to Sasori's location. The moment he entered, he saw that a lifelike bumblebee had already taken shape inside the Secret Base. About the size of a finger, it flew freely through the air under Sasori's control, indistinguishable from the real thing.
"That fast?" Anyo said in surprise. "Sasori, it looks like your puppet-making skills have improved again."
"I can't take all the credit," Sasori said modestly. "Kurotsuchi, have you forgotten? After the Third Shinobi World