All Strawhats and Law, met up with Heart Pirates on Zou. Law always felt a little uneasy because he hadn't seen his crew for a long time.
Since you spent several months with the Zou, the Mink tribe, it didn't take long to get used to their customs.
Minks had different customs and habits. They were a tribe, each made up of an animal, of course, you didn't find this strange since you were a member of the straw hats and Chopper ate the human-human fruit.
Now, let's start talking about strange traditions; Garchu is the way Minks greet each other closely. The logic was simple, all you have to do is rub your face against the other person's face and hug them.
This tradition was a normal greeting for them. It was too weird for humans, but somehow you liked it and found it sincere.
Let's go back to when Law and the Strawhats came to Zou. You were with Nami, Sanji, Brook, and the Chopper's. You were greeting the new arrivals.
Your eyes were kind of looking for Law. You were wondering how he was since you hadn't seen him in months. While you were looking for him, some Minks were giving you the garchu greeting. You couldn't see Law because they surrounded you. (You are very attractive. You're female and you're Luffy's twin sister. You are the complete opposite of Luffy. You are calm collected and think before acting and during your 2-year training arc after Marineford, you spend a lot of time around him and his crew so you and Law have an on-and-off-again relationship.)
You sighed deeply as the Minks left you. Then you felt someone approach your right shoulder... It was Law.
"Won't you give me the garchu greeting too, Kuriko-ya?" He said. His face was right on your right cheek.