Yun Feng waited in the Heavenly Realm for Vegeta and Trunks to emerge from the Hyperbolic Time Chamber.
While the others had gone in to train, Yun Feng was busy cooking up some mischief.
Yun Feng had set his sights on the naive Trunks. As time passed and the afternoon approached, Vegeta and Trunks finally emerged.
Looking at their confident faces, it was clear they had made a major breakthrough, but when they heard the others explain Babidi's game, Vegeta's expression turned grim.
Yun Feng walked over and said, "Vegeta, you can wait for the others to come out, then head back into the Hyperbolic Time Chamber."
Vegeta snorted coldly and ignored him. Yun Feng gave an awkward laugh and walked over to Trunks.
Yun Feng whispered to Trunks, "Trunks, come with me for a moment. I have some advice regarding your training."
Trunks nodded without suspicion. "Mr. Yun Feng, please wait a moment. I need to tell my father."
Trunks went over to inform Vegeta, who replied indifferently, "Be back before the next training session."
Trunks waved happily and ran over to Yun Feng.
Yun Feng told Goku to continue training with Gohan, adding sternly, "I've noticed Gohan's power leaking out even while he sleeps. You need to properly tap into his potential; it might be the key to defeating Babidi."
Yun Feng used Instant Transmission to leave the Heavenly Realm with Trunks, and the two arrived before a desolate mountain.
Yun Feng said, "Trunks, unleash all your power for me. Let me see what you've got."
Yun Feng needed to confirm if Trunks, like in the original story, was focusing solely on raw power while neglecting speed.
Watching Trunks' muscles swell and his power climb continuously, Yun Feng was surprised to see it almost touching the level of a Super Saiyan 2.
Back in the Heavenly Realm, Vegeta, Piccolo, and Goku all felt Trunks' power and broke into a cold sweat. Trunks' strength had reached such a level—it was truly terrifying.
Goku spoke up, "It must be Master guiding Trunks' training. It's fine; they aren't fighting an enemy."
Yun Feng watched Trunks and said, "Trunks, try attacking me." Trunks rushed toward Yun Feng at high speed, but Yun Feng easily dodged over a dozen of his strikes, leaving Trunks panting heavily.
Yun Feng said, "Trunks, you've fallen into a trap. Power is important, but how can you sacrifice speed just to boost your strength? This method of increasing your power is far too simplistic."
Yun Feng also powered up, transforming into the same bulked-up state as Trunks. The group in the Heavenly Realm felt Yun Feng's energy once more.
Yun Feng's energy was even stronger than Trunks', leaving everyone in the Heavenly Realm speechless with shock.
Trunks dejectedly powered down. "I really am an idiot. No wonder Father didn't train this way. I actually thought I'd discovered the secret to training."
Yun Feng suddenly gave a wicked grin. "Trunks, if you do me a favor, I'll guide your training."
Trunks was immediately excited. "Really, Mr. Yun Feng? You're willing to help me train?"
Yun Feng laughed. "Of course, but you have to do a small favor for me."
Trunks agreed instantly. "As long as you ask, Mr. Yun Feng, I, Trunks, will certainly do it."
Yun Feng said sheepishly, "Well, I've taken a liking to Android 18, but I haven't had a chance to get close to her. I want you to help me stage a little act."
Trunks' expression changed. "What? Mr. Yun Feng, how can you like an android? They turned the future into a living hell!"
Yun Feng said with a serious expression, "Trunks, because of your arrival, history here has changed. The androids here haven't killed a single person. Besides, I will turn 18 into a normal human. You just need to help me play your part."
Trunks lowered his head. "Alright then. I hope you're doing the right thing, Mr. Yun Feng. What do I need to do?"
Seeing Trunks relent, Yun Feng was overjoyed and leaned into Trunks' ear, whispering for quite a while.
Naturally, a hero saving a damsel in distress was the best trope, and Yun Feng chuckled to himself, thinking that Trunks would have to be the villain.
First, Yun Feng had to locate the androids, which wasn't easy since they had no energy signatures.
"System, system, help me find the location of the androids."
The system immediately locked onto them, and in a moment, their coordinates were imprinted in Yun Feng's mind.
Yun Feng smiled slightly. My dear 18, here I come. As the most popular female character in Dragon Ball, I didn't expect the system's reward to be this good.
Yun Feng flew to the vicinity with Trunks and said, "Don't hold back later, or it'll be easy for them to see through the ruse."
"I'll take this opportunity to teach you a lesson in combat. I have Senzu Beans on me, so don't fear injury. Channel all your hatred for the future androids into this."
Trunks nodded. "Don't worry, Mr. Yun Feng."
Trunks flew off at high speed toward the three androids, who were currently driving down the road.
Trunks fired a blast of energy, blowing up their car. "Androids, prepare to die!"
Android 17, 18, and 16 flew out, looking at the intruder. "Trunks, have you lost your mind? Why are you attacking us?"
Trunks wore a look of pure rage. "Androids, you turned my future into a hellscape. I won't let you get away with it!"
Android 17 and the others stared at him, shouting, "We don't know what you're talking about! We haven't done any of those things!"
Trunks didn't give them a chance to speak. "Enough talk! Die!"
Trunks' energy erupted, his combat power skyrocketing as a golden aura flared around him and his hair turned gold.
Yun Feng's system immediately displayed Trunks' stats.
Name: Trunks Race: Half-Saiyan Combat Power: Super Saiyan Grade 1 (Mid), 15 billion.
Trunks was no longer a match for the current Androids; Android 17 hadn't even lasted a few rounds against him before being sent flying, only to be blasted by a single energy sphere that left him covered in wounds.
Seeing Android 17 severely injured in just a few exchanges, Android 18 didn't know what to do and looked toward Android 16. Android 16 had no choice but to step forward and say to her, "Android 18, take Android 17 and run. I likely am not Trunks's match either."
Android 16 calculated his own strength; with a combat power just over 10 billion, he was absolutely no match for Trunks.
As Android 18 pulled the battered Android 17 to flee, Trunks flashed forward and blocked her path; Android 16 hadn't even been able to track Trunks's movement.
Android 18 looked at Trunks and asked, "Why won't you let us go? Since Android 17 and I were released, we have never taken a human life, and we also despise Dr. Gero for modifying us without our consent."
Trunks didn't speak, simply blocking their way before firing an energy sphere at them. Android 16 rushed over to shield Android 18, but he ended up suffering heavy injuries and was sent flying backward.
Yet, Trunks still wouldn't let them go, and another energy sphere began to gather in his hand.
Android 18 had already closed her eyes, and just as the blast was about to strike, a figure suddenly appeared, raising a hand to swat Trunks's energy beam away.
Android 18 saw a tall figure standing before her: it was Yun Feng, whom she had met once before.
Every woman harbors a dream of a prince, a dream of a hero saving a damsel in distress, and Android 18 was no exception. Looking at the suddenly imposing Yun Feng, an indelible impression was left upon her heart.
Yun Feng spoke calmly, "With me here, no one is going to hurt Android 18."