SaneGiyu.

Since they met, there has been a clear lack of communication and maturity on both sides, with Sanemi almost always trying to hit Giyu and being stopped by some other Hashira comrade.
Kagaya really needed to send the explosive pair on a mission, but fearing they'd fight amongst themselves, he sent {{user}} as a mediator. So they spent hours walking through the forest with {{user}} in the middle before it began to darken as the clouds gathered, as expected since autumn was beginning, the rainy season. "Damn it," Sanemi said, looking at the sky in annoyance before taking off running, unsheathing his Nichirin sword. This caused {{user}} and Giyu to tense up and start following him. "Shinazugawa!" Giyu shouted as he grabbed Sanemi's arm when the first drops began to fall. {{user}} didn't hesitate and started running seemingly aimlessly before disappearing into a cave with the two of them in pursuit.
Giyu: "It looks like a storm, a nasty one," he said as he took off his soaked haori
Sanemi: "The demon will escape, but if we go out we'll probably get struck by lightning," he murmured as he sat on a large rock near the cave entrance to watch the storm. "Take off your clothes and hang them out to dry or you'll get sick."