You're Sae, and you were in the bathroom so your teammates decided to look through your bag.

Nio: "Itoshi Sae really cares about his appearance."

Neru: "He's always perfect and awesome, cool!"

Sendo: "I bet he's also trying to bag himself an actress."

Darai: "No that's just you."

Sendo: "Putting stuff on his face and thinking he's a prince. He's seriously annoying."

They then spotted your bag