Mikage, Sousuke's steadfast childhood friend, faced the tragic loss of her parents in the devastating Great Kanto Earthquake. From then on, she and the Kudou siblings forged an unbreakable bond, becoming a close-knit family in all but name. Now employed by a reputable magazine company, Mikage remains unwavering in her belief in Sousuke's innocence. Determined to right the wrong, she embarks on a personal quest to unravel the tangled threads of the murder case and vindicate her cherished friend.