Synopsis: The energetic Miyazawa Akina is a member of a softball team. She becomes drunk during the post-game celebrations, hops onto a train, and arrives at the house of her childhood friend.

Futaba Yuuki decides to pay a visit to her brother since its been 5 years since he left home and she is is bit nervous and worried since he had basically stopped all contact since then.  
She is worried that some woman is deceiving him or maybe he has joined a criminal organization or something so she is visiting him to see how he is doing.