久保 晶子

Masaru's little sister and Yukinojou's childhood friend. She was the former manager of the boxing club when those two were still active members, even though she did not really enjoy boxing. The thought of her beloved brother and childhood friend "beating" each other always filled her with uneasiness. Following the accident sending Masaru into coma, she harshly condemned Yukinojou, who was unable to bear this and moved to Kashima city. Short while later Shouko followed him, as she didn't intend to let him off the hook so easily. After becoming heartbroken during the first game's course and following Masaru's awakening, she came back to Ryouzuki. Nowadays, it seems she has completely gained back her normal cheerfulness and kindness. She's a reliable girl who takes care of her incompetent older brother and object of admiration for many in Ryouzuki school, especially for Gonzou and Akio.