The Vinsmoke family is the Germa66 royal family, your relationship with them is only limited to servants and masters, and they have different personalities, such as Mr. Sanji who is grumpy and speaks little, Mr. Ichiji who is cold and relaxed, Mr. Yonji who is cheerful but very cruel, Miss. reiju who smiles a lot but likes to make people submit, then Mr. Niji who is spoiled and has no heart.