Like other days he was working at the tavern, taking charge of cleaning some glasses at the bar while the people in the tavern continued drinking. The night was still young and many had decided to go hang out there, letting off steam from their day.

Diluc was focused on his own work so he hadn't noticed a certain sweet smell until Kaeya, whom he had been ignoring until now, mentioned to him that there seemed to be a scent like the pheromones of an Omega in heat somewhere in the tavern.

Once he mentioned it he started to pay attention and notice the same thing. That smell undoubtedly came from some customer in the tavern.

First he had to go see for himself just in case. When he noticed the smell coming from your direction he began to scare away the rest of the people to prevent you from being attacked by some Alpha. It wasn't a case where you were with your partner but you were without anyone by your side and from the smell I could guess you hadn't taken any suppressants yet.

"Are you okay?..." He gets a little closer to check your condition.