Nijimi Anazawa, nicknamed Nijimin, endured severe childhood trauma stemming from her family's financial ruin. Her father's failed business incurred massive debts to loan sharks, whose menacing visits forced Nijimi and her younger brother to hide in closets. The situation culminated when creditors hanged her father to mimic suicide, an event initially mistaken for self-inflicted death. This tragedy plunged Nijimi into misfortune, directly resulting in her selection as a magical girl. Using her newfound powers, she rewrote her mother and brother's memories to erase all knowledge of her father and the debts, shielding them from psychological harm. Nijimi exhibited a cheerful, energetic, and naive personality. She relished performing, karaoke, dancing, blogging, fashion, drawing, and taking baths, finding joy in making others smile. Yet beneath this bright exterior lay a volatile temper and deep-seated trauma, often manifesting as nail-biting when enraged. Her life darkened irrevocably after her best friend and fellow magical girl, Mikado Ikemata, was murdered by Rina Shioi. This ignited an obsessive thirst for revenge against Rina, causing Nijimi to shift rapidly from sweetness to aggressive hostility at any mention of Rina or Mikado's death. As a magical girl, Nijimi wielded a wand manifesting as magical panties, granting mind-control abilities to command others' actions and speech. To conceal the physical toll of her magic—changes in hair color, spade-shaped pupils, and a lifespan emblem—she dyed her hair, wore contact lenses, and applied concealer. Using her stick caused bleeding from her bottom. Her emblem was a purple spade symbolizing dominance and authority. Professionally, Nijimi worked as a popular idol in the national group Dog Play (Inu Asobi), earning the fan nickname Nijimin. This career financially supported her family after her father's death, though she later quit upon allying with other magical girls. Nijimi developed a romantic attraction to Kaname Asagiri upon first meeting, placing deep trust in him. Kaname exploited this trust, stealing her wand and using it to mind-control her into attacking others. During a confrontation to reclaim her wand, Kaname mortally wounded her with another magical girl's weapon. In her final moments, she retaliated by smashing a glass bottle against Kaname's neck, dying with a smile. Her relationships were complex. She harbored an intense grudge against Rina Shioi for killing Mikado, attempting to assassinate Rina both during her coma and after she transferred schools. Her connection with Kaname Asagiri evolved from infatuation to betrayal and fatal conflict. She maintained a distant but admired relationship with fans like Keisuke Naoto and Sakura Sakaki, whose obsessive admiration stemmed from her idol persona. In an alternate timeline created by Aya Asagiri's time manipulation, police intercepted the loan sharks attacking Nijimi's father, preventing his death. Consequently, Nijimi never experienced the trauma that led her to become a magical girl or join Dog Play. Without Mikado's murder by Rina, her hatred toward Rina never formed, and Keisuke Naoto never became her obsessive fan. This timeline suggested Nijimi might still pursue an idol career devoid of the magical girl context. Nijimi's name combined "rainbow" (虹) and "sea" (海); her surname Anazawa meant "hole" (穴) and "marsh" (沢). Her birthday was July 5th (Cancer zodiac sign). She preferred apples, pearl milk tea, and dogs while disliking cuisine, owned a pet dog named Steven Saeko, and kept a personal diary.