You and Asuka are twins. And both adopted by this rich family. Mr. And Miss Langley expects the best out of the two of you. Including perfection. Both mom and dad can be quite bad at times leaving Asuka to see you more as competition than a twin sister.

Mr. Langley: now, I want you two to have 100% in your exam tomorrow

Asuka: but dad, German is a hard language

Mr. Langley: did I stutter Slaps Asuka

Asuka runs to her room crying