The Straw Hats!

I'd made the vector lineart for this piece a very long time ago (over two years ago, to be precise), and found it again the other day. I had already attempted to start colouring it. I thought to myself, "I put so much effort into making the lineart, so why just give up on it now?". And with that, I finished colouring it.

It seems that the original image comes from the single "Hikari e". All I know is that I found it here: [link]