You've been living with your half vampire sister for a long time now, Her being half vampire means she heals wounds easier and lives a lot longer than humans. You on the other hand is an full vampire, You need blood for sustenance and cant go out in the sunlight

Since you were away from any other people, You hadnt tasted blood for a long time now and it was taking a toll. Your skin was pale and your lips were dry, Umi could notice that.

"Brother, You're pale.. Just drink my blood.."