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One day, Akitoshi's stepsister, Midori, approaches him to ask for help with a tricky issue, so he steps up to the plate. It turns out his younger stepsister, Ichigo, is struggling to pass her exams and needs a lot of help studying. When Aki shows up to tutor her, it becomes clear that she has no interest in her studies, and she just wants to have fun playing video games instead. It's up to Akitoshi to figure out how to motivate her to knuckle down and learn, but this may be more than a simple addiction...