First skill

The four kids decided to throw a party with the food they hunted.

After they ate and decided to go to sleep, Riku opened the system and opened the worst gacha box, because the next gacha machine is 650 gold.

He opened it up and there was a light breeze. Then a system message appeared.

unlocked kid Goku's Kamehameha (trash out of trash skill rarity 1% in the worst gacha machine)

Riku was very excited to test it out tomorrow and went to sleep.

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the next day Ace told Riku and Luffy that him and Sabo were going to become pirates, then Riku and Luffy replied that they were also going to become pirates so they decided to rob the nearby thieves to get some money so that they could get a pirate ship.

When they arrived there the thieves noticed them and said while laughing. Haha! What are kids doing here, go back to your mom, you brats!

Ace was extremely angry and said "who are you calling brats, you morons!"

Ace was about to attack them when Riku said "hold on"

He looked at Riku in confusion

then Riku said "let me handle this I wanna test out my new ability."

Ace agreed and stepped back

The thieves were now angry because Ace called them Morons and were about to attack them when Riku suddenly yelled "Kamehameha!" a blue light shined and caused the thieves and Ace, Sabo and Luffy to close their eyes.

Then the blue beam shot at the thieves resulting in an small sized explosion (compared to all of one piece including the four Yonko and the marine admirals so of course it was called a small explosion and it wasn't Goku, it was kid Goku)

but it was good enough to blow away the thieves and knock them unconscious.

The three boys watched Riku and their mouth opened wide. Ace said "wow! Your really strong, looks like I wasn't wrong about you!"

Riku responded with a smile.

Then a message appeared,

Level up!

Level up!

Level up!

you have defeated some thieves, assist in defeating them is 100%, earned 400 gold!

you have earned title (thieves destroyer) Earned 600 gold for earning title

Level up!

Level up!

Level up!

Level up!

reached level 10 earned reward Mihawk's training sword (rarity: bad)

Riku thought since I earned 1000 gold from this and had 50 gold left over from the bear boss reward I have 1050 gold in total and could buy the second worst Gacha box once, because the next gacha machine costs 7500 gold, and I got a new sword at rarity (bad) which is one of the rarity in the second worst gacha machine. In that machine there are also three rarities. Trash out of trash 80%, bad 18% and lesser common 2% so the sword was the second best rarity in the second worst gacha machine.