Yes, the heroine can do magic, and she is so proficient in it.
It doesn't matter if you haven't read Harry Potter. The first chapter tells about the heroine's life experience, and the subsequent plot is One Piece.
The male protagonist is undecided for now, let's tease each one first (funny)
No cp temporarily
During the Whitebeard Pirates
"Lily, my knife is broken, please help me repair it."
"Recover as before."
"Oh, thanks!"
When invited (?) By the Navy as a guest
Akainu: "Are you going to be loyal to the navy or become a pirate?"
Lily looked at the hot lava on his hand and raised her wand: "I think you need to cool down - a freezing spell."
Disapparate quickly before Akainu gets mad.
When in the Straw Hat Pirates
"Hey Lily! Help me make this meat bigger!" "... Grow it quickly. Please don't use magic in such strange places in the future."
"Lily, can you lend me another magic book?" Robin walked over with a smile.
"Lily~ The shipping fee hasn't been enough recently..." Nami came over pulling a box that seemed to be filled with Baileys.
"..."
Regarding the development of various usages of Lily, you deserve it.
Intention: As long as you are happy