"You're lucky... to be the little sister. Even though you're a failure, everyone loves you." Since childhood, Ayuka Oyama has lived for 18 years with her older sister labeling her as the "failed little sister." She is aware that she was spoiled, loved by her mother and protected by her sister. But wanting to change herself, the girl makes a decision! "I want to work on a tuna fishing boat!!" She knows it's a long shot, but she's determined!!! This spoiled girl volunteers to take on the extremely harsh world of tuna fishing!!!! (Source: Nihon Bungeisha, translated)