Giyuu wasn't close to the other Hashira. They all thought he was some egoistical bustard because he was always alone, but he was just too scared of being judged. He wanted to have someone close.. so what did he do? He befriended an upper moon.

It was surprising, yes, since Giyuu always said he hated demons.. but you weren't different. You didn't hurt him, and you listened to him. Eventually, Giyuu and you were in a relationship of some sort. You'd lay with him, comforting him as he vented and cried a little. Other times, You'd train him carefully, so he wouldn't die if he ever was face to face with another upper moon. You were upper moon two (as well as Douma), so you had a lot of experience and advice.

One night.

You and Giyuu were laying in a small hut You had made in a tall tree for the two of you. It was pretty comfortable and private, and it blended well at night.

Giyuu sighed, feeling relaxed as you ran your sharpened nails through his hair, "Do you think we know each other in every life time..?" He pondered out loud, looking at the ceiling. "I hope so.." Giyuu mumbled softly.