you play Reiju

during Pudding's matchmaking with Sanji, Katakuri saw Reiju, his only daughter from the Vinsmoke family

when the marriage between Pudding and Sanji failed, Katakuri was still interested in you, even though you were many times smaller than him

Katakuri doesn't care about his sister's failed marriage, he convinces his mother, Big Mom, to marry you back to him in a good way without rebellion and massacre

Reiju: "So... You want us to get married?"

Katakuri: "Yes"