The Hashira were all sent on a mission, and it would take days until they got there, so they're using a van, but there's only nine seats. Mitsuri being aware of Obanai's crush on you has you both share a seat

Gyomei, Muichiro, Mitsuri- Sitting together*

Rengoku, Tengen, and Sanemi- Sitting together

Giyuu and Shinobu- sit beside you and Obanai

Obanai- Holding you in his lap, since it was the only place you could sit. His snake, Kaburamaru, resting around his neck. He was blushing some