It was about two months since Y/n had Join beacon and things had been going good for him as when he was training with his ki blade until he decided to head back to his dorm until suddenly he felt that he was smaller he looked around him
Y/n: "Um is just me or did everything just got bigger or did i got smaller?"
Y/n said as he walked to a mirror and sees himself as a kid again and Weiss and Ruby came in to see this
(He has the tail in this state)
Y/n: "What is there something wrong with me?"
He said as his tail was moving around until he noticed it as Ruby was looking at his tail as she soon grabbed it and Y/n went into a complete shock and fell to the ground
Y/n: "So thats what it feels to have a tail being pulled on"
Y/n said as Ruby lets go of his tail as Goku and Vegeta came with Trunks from the future and explained to him what happened to him and why he is a child so Y/n had to wait till they get the Dragon Balls again so they can wish him back to normal but as they we're going to combat class Y/n was called to the field as he waited for his opponent and it apparently is Cardin as he was smiling
Cardin: "Oh im gonna have fun with this."
He said cracking his knuckles as Y/n waited for him to strike but as he did Y/n punched him in the face and went super Sayian
Y/n: "Hehe you were saying"
He said as he punched cardin again and again till he got bored and used the Kamehameha but it was interupted as a portal open and a strange person had a resemblance to Vegeta but he has white hair
The stranger said nothing as he shot a ki blast at Y/n as he dodged it in time as he kept firing more so Y/n tried to go for a punch but he was kicked and followed up by punch sending him flying to the walls of the arena as Ruby and Weiss came to check on Y/n as he got back up and went to Ssj3 and shot himself and punched him so many times but it never even affected him
Y/n: "What how do my attacks not even hurt him"
???: "It's easy im the lord of Sayians and you are just a puny weakling and call me Baby."
After He said that he knocked Y/n into his world as he grabbed Ruby and took her to his palace as Y/n was panting as he was looking at the moon as he felt a surge of uncontrollable power as in the distance someone was watching it all happen as a little girl was beside him
???: "Grandpa whats going on over there?"
???: "I don't know Pan but stay back I'm going to check it out."
He said as he changed his form as Pan stand back but couldn't help but follow her grandfather as Y/n was breathing heavily as he was transforming while Baby was watching this happening as he was shocked as Ruby bite his arm releasing her. After Ruby landed on the ground she ran to Y/n quickly as possible
As the transformation was complete Y/n as the Great Golden Ape was smashing everything around him as he was shot by something and turned to see Goku but he was different as his hair was longer and spikier as well as he had red fur all over him
As Goku looked at him as Y/n attacked him angry as he tried to hit him but soon Ruby was in front of Goku stopping him before he can use an attack on him
Goku: "Kid move out of the way he's unstable unless i remove his tail."
Goku said as Ruby held her hands out
Ruby: "No I won't let you hurt him he was trying to save me from this guy called Baby."
After she said that Goku looks over to see Baby coming as Ruby showed Y/n a picture of who he was back then and it showed him with Goku, Chi chi, and his step brothers. Y/n soon moved Ruby softly out of the way and looked at the moon and puts his arms out to as he changed form
After Y/n changed He was standing on some rocks as Ruby was looking at his new appearance and walked to him
Ruby: "Y/n is that you are you still on our side you know the good ones?:
Ruby asked worried as Y/n looked at her and smiled at her
Y/n: "Yeah it's me but this is something else. What is this form?"
Y/n asked himself as Goku showed up with a little girl next to him as she looked at Y/n
???: "Grandpa he looks just like you."
Goku: "Yeah he does lool like me Pan. which now brings me to my question who are you?"
Y/n: "My name is Son Y/n your adopted son in my world."
Later as Y/n explained about who he is and where they came from Baby began to attack them as Y/n grabbed Ruby and got her away to safety as he shot some ki blast at Baby. Once Y/n puts Ruby where Pan is Y/n went out to battle and helped Goku against Baby
I hope you enjoy the second chapter of the Fusion Heart