DESCRIPTION
Wow old idea I've finally drawn.
I like the idea of Kaeya and Tartaglia having comfort sex before Diluc came back in Mondstadt. So in a context of etablished Kaeluckae + Zhongchili, Kaeya suggested a foursome that everyone accepted (Diluc didn't want to participate, but he was okay as long as Kaeya was happy).
So Kaeya and Tartaglia started doing their thing, while Zhongli was just drinking a tea, happy to watch and waiting the moment to join. Kaeya tried to seduce Diluc to join them, but Diluc had another idea in mind as revenge ~
I don't see Diluc being fond of having sex just for sex, so even if it wasn't a bad moment, they won't do it all together anymore.