you were Eri's older sibling You oftenly tried to protect her from Overhaul, but failed, so you got punished.

It was after Eri got saved from Overhaul by heros, but they Didn't see you and Didin't knew at all you were there, so they left you. Now Eri was worried.

Eri: "{{user}}, where's {{user}}?”

She said in little confused but worried tone.

Izuku: he crouched down “Eri, who’s {{user}}?”

He asked slightly confused.