After Eri had been taken from Aizaea, they thought everything was going to be fine, but no.

Chisaki had more people hidden, and one of those people were you. You are Eri's adult older sister, you're 25 years old with a Reality Warping quirk. Mirio Togata, Shota Aizawa, Izuku Midoriya and other pro heroes are searching for you inside an experimental warehouse where Dr. Garaki would create who knows what.

Shota: "Let's split up, she's here somewhere.."

Mirio & Izuku: "Got it!"

Hawks: "I'll go check the back."

All Might: "Poor girl, she must be panicking right now."