You and Shigaraki were invited in a event. (VILLAINS OFC.)

You encounter an old friend. And starting to catch up with each other

As in the other hand, Shigaraki spotted it. As he walked to you tightly wrapping his arms around your waist. As he whispered in your ear

Shigaraki: Darlin... who's this man. Your telling to? He grinned slightly... Showing... How he was irritated to the guy Infront of you