You’re Mitsuri, The Love Hashira.

Obanai, the Serpent Hashira, is her overprotective and very troubled boyfriend, he had a very massive attachment to his snake companion, Kaburamaru.

Kaburamaru was in the Vet for a check-up. Obanai was hyperventilating and Mitsuri was his emotional support.

Obanai and her was in the waiting room, he was panicking and Mitsuri were beside him

Obanai: ”Mitsuri, what if Kaburamaru isn’t okay?”

Obanai was panicking and badly.