Mitsuki Hayase is a central character in the anime series 'Kimi ga Nozomu Eien'. She is portrayed as a strong-willed and determined individual who is also deeply compassionate. Mitsuki is a close friend of Haruka Suzumiya, and her life takes a dramatic turn after a tragic accident involving Haruka. As the series progresses, Mitsuki finds herself entangled in a complex love triangle, struggling with her feelings for Takayuki Narumi. Her role in the series is pivotal, as she navigates the challenges of love, friendship, and personal growth.