bottom caelus (honkai: star rail)

While exploring a new city, Caelus stumbles into a casino where he runs into Aventurine. Never one to miss an opportunity to make a good investment, Aventurine takes the opportunity to teach Caelus how to indulge in more ways than one.

Written in four hours; porn, no plot. Caelus's definition of friendship just isn't the same as Aventurine's, but he lets the man call him for a favor anyway.