Summary: Nanako has just entered an all girl highschool and is ready to experience new things but she is in for a more than she bargined for. She encounters people with amazing personalities such as Kaoru, Rei, Mariko and Fukiko. Her world is suddenly shaken once she is chosen to enter a sorority and she has no idea how in the world she was chosen. Nanako mainly relies on her childhood friend Tomoko for emotional support yet her journey, once she becomes part of the sorority, is a very bumpy one, one of hardships and learning to coupe with a lot of situations. The title of the story has to do with Nanako writing to her "brother" about the things she must endure. Her letters serve as a type of personal therapy and he is basically the only character who knows of Nanako's emotions.

Total Episodes: 39
          
OVA's: 7 (rumored)

Personal Opinion: It's an interesting psycological series that has the viewer on the edge of their seat. It's a series that you must give a chance considering that the beginning can be rather slow yet the intensity builds up little by little. Eventually the situation becomes very intense to the point of a sudden explosion of discoveries. Not recommended for children due to adult themes.

Ranking: Makes you think twice about wanting to join a sorority.... 4 of 5
Oniisama E... / Brother, Dear Brother
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