(Somewhere on a grassy hill)
A young man is lying on the grass in the shadow of a large tree sound asleep. Upon closer inspection, one could see him wearing a long red military coat with yellow buttons like a cape. Underneath the youth has a red button-up shirt that is worn in such a way to reveal most of his upper chest along with a yellow vest on top of the shirt. His lower half consists of black shorts rolled up just slightly above the knee with black military boots.
As time goes on the sun begins to move until beams of sunlight begin to hit the young man's face causing him to wake up. He slowly opens his eyes and after getting accustomed to the light he sits up from the grass taking a good look at his surroundings. Some distance away to his left seems to be a dense forest with what seems to be some sort of weird glass dome covering the entire forest. Looking over to his right, he could barely make out what seemed to be a tall wall seemingly protecting something, but he couldn't make out what. He then did what any reasonable person would do in this situation and proceed to lie back down in an attempt to fall back asleep. This person was Ace and since he was still half-awake, he didn't think too much about what was going on.
'Although this dream is a little strange, I can't say I don't enjoy it. It's very peaceful being able to relax in the shade with the cool wind blowing.'
His relaxing time was soon interrupted, however, when Ace heard a robotic voice in his head seemingly out of nowhere
[I'm glad the young master is happy with where he ended up despite the given circumstances]
Ace's eyes shot wide open and he quickly brought himself back into a sitting position looking all over for the source of the voice. Once he saw that nobody was near him, he wanted to try something to confirm his suspicions. He had read plenty of novels with a somewhat similar situation to his, so he knew a good way to find out what was going on
[System?]
[Yes? How may I be of service?]
Ace couldn't believe what was happening right now. He had enjoyed reading novels where the MC is transported to an anime world with a system but there's no way it was happening to him right?!
'There's no way this is real. This doesn't happen in real life and I'm most likely still dreaming. Of course, I want this to be real and not suddenly wake up in my bed. I just need something to wake me up.'
[I can certainly help with this young master]
Soon a jolt of electricity shot through Ace's body causing him to grimace in pain
[Hey what the hell was that fo-]
Before Ace finished his sentence, he seemed to figure out the answer himself as a realization hit him hard.
'When I felt that jolt, I felt some pain. If I can feel pain, then this isn't a dream? I can't believe this! Am I really in my favorite anime One Piece?! I wonder which island I'm on, hopefully I'm somewhere in East Blue near Luffy. Please tell me I was transported here before Luffy sets sail, I've always wanted to imagine myself in his crew going on crazy adventures. Also, I sho-
[Oh dear, it seems young master is not aware of the current situation then.]
Ace was confused about what his system said.
[What "current situation" are you talking about?]
[I shall explain everything to the best of my abilities. After the young master wished to be in the world of One Piece, your wish was somehow heard by a powerful being who after looking over your life decided to grant your wish. However, due to an error during the transport, the situation has changed slightly]
[What do you mean by that?]
Ace wanted to ask a lot of questions but decided to hold off until this seemingly important one got answered first.
[Well because of this error the young master was not transported to One Piece and has instead landed in an unknown world]
WHHHHAAAAATTTTTT?!??!?!?!!?