TV-Series
Description
Eri Wanibuchi is a supporting character in Kill Blue, known for her role as the head of the Science Department within the Z.O.O. assassin syndicate. She is also the ex-wife of the series protagonist, Juzo Ogami, and the mother of his daughter, Kozue.

Eri possesses a high IQ and is deeply engrossed in her professional work, particularly in the field of genetic manipulation research. Her expertise in this area becomes crucial in the context of Juzo's transformation, as she is knowledgeable about the unique properties of the wasp that bit him and the genetic manipulation group associated with his final job. She presents as an analytical and caring individual, and despite their divorce, she continues to show genuine concern for Juzo's well-being. When Juzo awakens to find his body has undergone extreme physical changes, it is Eri who reassures him and provides a scientific explanation for his condition. She is also cautious in her approach, advising him to take a leave from his dangerous work since his life is not in immediate danger, though she understands his financial responsibilities.

Beyond her scientific role, Eri is a source of emotional support and practical guidance for Juzo as he adapts to his new life as a middle school student. She collaborates with his partner, Kotatsu Nekota, to help him navigate this challenging period. Their interactions reveal a sense of humor and a strong connection to their shared past; she playfully comments on his stress and the bags under his eyes from studying for exams. Eri also encourages Juzo to embrace the possibility of failure in his newfound passion for learning, appreciating the positive changes she has seen in him since he started attending school.

As a mother, there are moments when she feels disappointed, but she remains dedicated to her work and her daughter. She keeps tabs on Kozue's progress and assures Juzo that their daughter is doing well and has become responsible on her own. Her personal life includes a fondness for coffee, for which she has distinct preferences, and she tends to view meals primarily as a means to replenish energy rather than for pleasure.

In terms of appearance, Eri typically wears a white laboratory coat over a black turtleneck shirt. Her light brown hair is of moderate length and is often pulled back into a messy bun, with stray strands hanging loosely around her face. She has turquoise eyes and is depicted as an adult female.