Age 762, November 4.
The other z fighters, Chichi, Bulma and Kana arrive at the lookout.
The one who will be going on a trip is Yamcha, Krillin, Goku, Gohan, Ryuu, Chichi, Bulma, Piccolo, Puar, Raditz, and Kana will go to their vacation on space.
"Is everyone ready to have a vacation on space" Raditz said as he show the capsule of the space ship.
"Yes, all the things I needed is ready" Bulma said a she show her capsules to everyone.
"We are ready" Goku said as Chichi, Gohan and Ryuu nodded.
Yamcha, Krillin, Piccolo and Puar nodded to him.
"Then let's go inside" Raditz said as he throw the capsule to the ground and making a big smoke around it.
Seconds later, it revealed a big ship that can house 100 people in it.
The z fighters and co. go inside to see many rooms to sleep, a training room that has a gravity 50x, a controller room for the spaceship to travel.
"Wow, this ship has a high technology, Hey guys, can I study this thing when we finish our travel" Bulma said as she look at the gravity room, then to the controller room.
"Sure, this thing is for travelling only anyways" Goku says as the Son family goes to each others room.
"Thanks, hehehe, get ready my baby, I will strip you naked soon" Bulma said as she look at the ship and go to her room.
"Weird, she must like technology much, oh well, hey guys is it okay if we randomize the coordination and let the fate bring us to somewhere" Raditz said as he shouted.
They shouted with yes and Raditz move to the controller room and push the button as it randomize then moments later, the coordination stop at namek.
"Looks like we will go to Namek, oh well this should do the thing" Raditz then shouted where they were going as they shouted back as okay, not minding the incoming storm except for Ryuu who heard that they will go to namek make a plan.
'Nice, I should learn the Kaioken from dad' Ryuu thought and walk out of his room and go to the next room where Goku and Chichi is staying as he knock on the door.
The door opened and see Goku opening the door.
"What is it son, do you want some grapes" Goku said as he eat some grapes.
"No, I don't need grapes, Can you teach me the technique you learn from the heaven?" Ryuu ask.
"Sure, Chichi I will be teaching Ryuu and Gohan my techniques I learn, can we go" Goku shouted at his back as chichi approve.
"Looks like Chichi approve, let's go to gohan" Goku said as Ryuu nodded.
They walk towards the next room, Ryuu's room is in the left side while Gohan is in the right side, and goku at the middle.
Knocking on the door Gohan shouted with wait and open the door to see his Father and Brother at the door.
"Oh hi dad, Ryuu, so what do you want from me" Gohan said with a wet hair.
"Oh we are just asking if you want to join us in the training room to learn dad's new technique" Ryuu said as Goku nodded.
"Okay, there's not much thing to do anyway" Gohan said and walk out of the room and close the door.
The trio look like a king with his two followers going somewhere important, while the other people is sleeping except for Raditz and Kana of course, since there is steaming in their room, sad thing is it's sound proof.
Walking to the training room the trio get inside and Goku increase the gravity to 11x since he want to and look at his sons unaffected by the gravity in surprise.
"What!?, How are you withstanding this gravity!?" As he look at the duo who is playing tag.
"Oh, because we already train in that pressure of gravity" Ryuu said as Gohan nodded and chasing Gohan around the room.
"Wha.., ahh, Whatever, now I will teach you how to do kaioken and since you can already move in this pressure, it should be easy for you to do kaioken times 2" Goku said as he demonstrate the kaioken.
Gohan and Ryuu look at Goku who is doing a squat as he shout in top of his lungs.
"ahhhhHHHHHHHHH, yamete(joke)" Goku yell as a red ki surrounding him and stop.
"Do you see it kids, this red ki Aura around me is kaioken times two, and it could go higher but the downside of this technique is your body, if your body can't handle it then you will feel pain all over your body, even if it's just a light tap, so use this in emergency okay" Goku said as he teach his kids how to do kaioken.
He said that to achieve kaioken, they need to compact the ki in their body and that's the reason why the downside is the body, because the body can't handle large and compacted ki in him if they did not train and this might cause death to the users.(this is my bs side acting)
Ryuu and Gohan listen seriously when they heard that it can damage their body if use carelessly and resulting to death, so they take that words into their mind.
"Now that you've learn how to do kaioken, you should try it, it's okay if you cannot learn it now since it took me a whole month to achieve it" Goku said proudly as he thought what king kai said to him.(no flashback)
Gohan and Ryuu nodded at each other and try to do the kaioken, minutes turn to hours as they kept trying how to do kaioken until Ryuu achieve it bringing his Power Level to 2,400,000 PL.(base 1,200,000)
His ki aura change from white to red as he tried to maintain it, while Gohan is still trying the kaioken for the night and fail, Goku pat his first son and encourage him.
"I'll stay here for a minutes cause I want to maintain this kaioken 2x" Ryuu who is still in kaioken said.
"Okay, be careful okay, don't push yourself from exhaustion" Goku said as he bring gohan outside the training room to eat.
"Fuuh, this thing is quite hard to maintain, atleast my body didn't sustain any damage" Ryuu said as he try to do kaioken 3x, bringing his power level to 3,600,000 PL.
As the toll of the kaioken increase but not enough to damage him.
'Wait, isn't this perfect for increasing power level, since it damage the body and I can heal myself with magic, hehehe thanks King kai for this technique of yours, I will use it wisely for you' Ryuu thought and increase to 5x bringing him to 6,000,000 PL.
Ryuu get into his knees as the gravity 11x and kaioken 5x is in his body. His body is aching in pain as he heal with magic, bringing his base to 1,620,000 PL in just that session of kaioken 5x.
"Hahahah, this, this is the perfect thing for increasing, why didn't they think of this when they make their fanfics of dragon ball" Ryuu laugh as he thought about those dragon ball fanfics.
"Oh well, they might not have thought about it or they just don't want their mc to go stronger than the original character" Ryuu said as he increase to 6x making his Power Level to 9,720,000 PL while his body ready to give up but he healed it in time, increasing his base power to 1,900,000 PL.
"This should do it, I will train tomorrow of how to maintain kaioken while not damaging my body" Ryuu said as he go back to his base and turn off the gravity.
Walk out of the training room, he see the z fighters(Kana is in it), Bulma, and Chichi, eating.
"Good evening to you guys" Ryuu said as he wave at them.
"Good evening to you too Ryuu" Kana said as she eat with Raditz.
"Good evening, Ryuu" Raditz said and followed up by Piccolo with a nod.
"Good evening my son, come sit next to me and eat" Chichi said as she pointed next to her seat, and Ryuu go there and seat.
"Good evening Ryuu" Gohan said.
"Good evening, so how's your training doing" Goku said and Krillin, Yamcha and Puar greet him.
"All good, I can maintain my kaioken 2x now" Ryuu lied as he can go to 6x time or even more if he pushes it.
"Good, keep up the good work but you need to also relax your body and mind" Goku said as he pick a meat and bite it and chew.
"I will" Ryuu said as his eyes glow when he look at the meats and pick two meats to his mouth.
They continue to eat and singing everything the music from bulma's phone, they party like crazy as they get drunk except Ryuu and Gohan of course. Chichi then bring goku to their room and followed by Kana as she bring Raditz.
Next time on Reincarnated as the Second Son of Goku.