Main characters of the series

• Nanami "Nana" Takahashi (高橋 七美 Takahashi Nanami), the series protagonist, is a girl who falls in love during high school with the popular Motoharu Yano.
  They struggle with issues of trusting one another as the shadow of Yano's dead girlfriend, who was with another guy at the time she died, looms over them. In the manga it is shown that Yano stopped contacting her after half a year following his departure to Tokyo, which eventually led to their breaking up. She eventually begins dating Takeuchi, Yano's best friend, but is unable to forget her former love. She is shown to be very sweet and caring, and she supports Yano unconditionally, even putting her own feelings and needs aside. At one point, Yano even confesses to Takeuchi that he believes she is strong enough to carry on without him. She is described as having a "baby-like" face by both Yano and Takeuchi and being cute rather than beautiful. In the anime adaptation, she is voiced by Nozomi Sasaki.

• Motoharu "Moto" Yano (矢野 元晴 Yano Motoharu) is a popular boy whose girlfriend was killed in a car crash while out with another guy. He has a hard time trusting Nanami, and displays jealousy and possessiveness, but he is also shown to be really childish and willing to receive affection (Nanami even compares him with a cat at one point). As the series progresses, he wrestles with his feelings for his dead girlfriend versus those for the living Nanami, whom he even calls "Nana-chan" at times. Yano moves to Tokyo with his mother, Yoko, but after half a year he stops contacting Nanami, effectively breaking up with her. Eventually it is revealed that his mother killed herself, after which he disappeared. He reappears four years later, living with Yuri Yamamoto but still remembering Nanami. The tragedies he had to cope with left him in a deep state of despair, making him blame himself and believe there is something wrong with his way of loving. He eventually manages to recover with Nanami and Takeuchi's help. In the anime adaptation, he is voiced by Hiroshi Yazaki.

• Masafumi "Take" Takeuchi (竹内 匡史 Takeuchi Masafumi) is Yano's close friend and becomes a friend and confidant for Nanami after she begins dating Yano. As the series progresses, he finds himself falling in love with her, leaving him unsure how to proceed. When Yano breaks up with Nanami, they begin dating. He eventually proposes, but she turns him down. He is a really understanding, calm and nice person and cares deeply for both Nanami and Yano (whom he calls "Moto"). After being rejected by Nanami, he decides to do his best to support her and bring Yano back to her. In the anime adaptation, he is voiced by Takuji Kawakubo.