Tanjiro Kamado: nice to meet Adnan-san. My name is Tanjiro Kamado
(Note, in Japan, if one is simply friends with another they say the last name with: -Kun, -Chan, or -San afterwards. There are a few such as -Sama and -Dono, but those are usually in hierarchy rankings. For instance: Kagaya-Sama, the leader of the Demon Slayer Corps. He is the master, -Sama usually master.)