Sanji and Luffy are pure mirrors.
Early Life:
- Luffy had no family, except grandpa. So he instead made family with 2 boys and bandits, and they were the best family.
- Sanji had a family, and they were horrible to him, except his mother and sister.
Fathers:
- Dragon wanted Luffy to be free and have his own quest
- Judge wanted Sanji to be restricted, stay at home and be his soldier
Brothers:
- Luffy had Adoptive brothers that loved him
- Sanji had Blood brothers that hated him
Mentors:
- Shanks sacrificed his arm for Luffy
- Zeff sacrificed his leg for Sanji
Mentor's Treasure:
- Luffy wears Shank's treasure on his head and took it everywhere
- Sanji lived in Zeff's treasure and planned to look after it for a long time
Interesting how both their first flashbacks focuses on their mentors, then their second flashbacks focuses on their family. But yh both Sanji and Luffy have strong wills, but their differences are their morals due to their differing environments growing up.