Complex sentence: The story revolves around the quiet Mari Kumakura whose only noticeable quality is her top of the class grades, enter the cute and friendly Akko Oohashi whose goal is to get to know Mari and become best friends with her.
Split into simpler sentences: The story revolves around the quiet Mari Kumakura, whose only noticeable quality is her top of the class grades. Enter the cute and friendly Akko Oohashi, whose goal is to get to know Mari and become best friends with her.