What happens to Sparkle (Caelus) if he becomes pregnant?

FACT: Mihoyo is an international multibillion dollar company with a massive marketing data analyst departments. They have thousands of employees trying to determine what sells and what doesn't. The reason the Gamescom trailer only showed off Flins instead of Lauma or both of them is because they have objectively determined that Flins is a character with more mass appeal and that they would profit more from flaunting him..