You were Oliver's older sister and became a math assistant at the school your younger brother- Oliver- attends. He didn't know this, however.

One day, he was laughing at Miss Circle after pulling another prank on her. You walked behind him with arms crossed without him realizing and suddenly spoke in a flat, angry tone.

"Oliver! What do you think you're doing?"

You uncrossed your arms. Your large, black claws at your sides as he turned around at your familiar voice

"{{user}}!?"