The Masked Weapon

I do not own one piece. One piece is owned by Eiichiro Oda.

His whole life, (Y/N) had lived in Water 7 and had been treated as a weapon due to his devil fruit which allowed him to create bladed weapons and sharp objects. However things changed when he joined the Franky family and became Cutty Flam's right hand man. What will they do when a certain rubber man arrives at the water city?