Mr. Anazawa is the father of Nijimi. She loved her father very much and wanted the best for him. Mr. Anazawa was in a big debt due to him wanting to start a business and taking money from lone sharks to do so. His business was unsuccessful and he didn't have the money to pay them back. He ended up killing himself over the stress the dept brought to him and his family. Nijimi fell into misfortune and became a magical girl because of his loss.
Mrs. Anazawa is Nijimi's mother. She seems to be a kind and caring mother. Her relationship with Nijimi is very nice and simple. Nijimi did erase her memories about the debt when she became a magical girl.
Anazawa's brother is the little brother of Nijimi. Nijimi and him would hide in the closet together when the loan sharks would come into their home. Anazawa's brother had his memories erased just like his mother about the debt and Mr. Anazawa. Nijimi even got her brother a dog by the name of Steven Saeko.
Steven Saeko is the pet of Nijimi. She's been seen walking it and when Nijimi died, there was a panel of it shedding a tear.
Mikado Ikemata was Nijimi's best friend. Though not much is known about their past, it seems like they were close. It was stated by Nijimi that Mikadon was the magical girl who had been her one and true friend. Mikadon's death was the reason of Nijimi's desire to kill Rina Shioi.
Rina Shioi is the girl who killed Nijimi's best friend, Mikado Ikemata, which causes Nijimi to hold a grudge against her. She has tried to kill Rina when she was in a coma in the hospital, but Tsuyuno Yatsumura used Mikado's stick to protect Rina from Nijimi's harm. When Rina transferred into the same school as Nijimi, Nijimi attempted to kill her right on the spot, but Tsuyuno tackled her before she could strike death upon Rina. Tsuyuno told Aya Asagiri to steal her stick, which she ended up stealing her panties, causing Nijimi to get embarrassed and start to cry.
Rina and Nijimi have a very two face relationship due to when they were at the beach, they seemed to get along just fine and when Nijimi died, Rina said that she regretted killing Mikado.
Kaname Asagiri is the one that Nijimi had a crush on. When first meeting him, she planned on killing Aya, but she immediately changed her mind due to the thought of Kaname being in a state of grief. Nijimi wasn't aware of Kaname's true nature when she had fallen for him. When Kaname stole Nijimi's stick, she thought that he was going to give it back to her, but when he didn't, she didn't become mad at him, but more scared. When Asahi tried protecting Nijimi from Kaname, Nijimi was mind-controlled into choking Asahi with a strand of rope.
When Nijimi was taking everyone's sticks, Kiyoharu spoke to her through her stick and snapped her out of the mind-control. Nijimi got mad at what Kaname was doing, she started to charge at him, trying to kill him, but Kaname sliced her with Sayuki's stick, causing Nijimi to fall to the ground, wounded. Before Nijimi could die, the broke a glass bottle and smashed it against his neck, causing him to lose his voice. Nijimi died right after that, a smile on her face as she did so.
Keisuke Naoto strongly admires Nijimi. He has a fanboy crush on her and loved her very much. They only talked at dog's Play's meet and greats though. He owns all of Nijimi's merchandise and watches videos of her in his free time.