ImoTsuyo: If It's for my young sister, I'll be stronger

After her mother's death, Hana Aochi went into a deep shock leaving her expressionless, does not laugh or cry. But keep saying and doing what she want as she was before. Saigo, her older brother, has been taking care of her ever since. He wants to get his young sister back to normal, but it won't be an easy task.
Contains a dictionary system to learn basic Japanese (no Japanese letters, just romaji).