Transmigrated to the World of One Piece With Magic Awakening

After transmigrating into the world of One Piece, she is adopted by Dadan and becomes the big sister of Ace, Luffy, and Sabo? And a Magic Awakening panel appears, too? This, this, this... With a setup like this, it would be a waste not to do something in the New World from the start! But becoming a pirate is out of the question. The world is too dangerous, and I'm still too weak. So I'll find some companions, form an adventuring group, and explore the world instead! But with these three troublemaking little brothers around, a peaceful life is out of the question. P.S. Female-led story, no male lead, no romance, friendship-focused. Be aware that it features lots of original characters and plotlines.