He is the main male character of the story and narrator of the series. He is a somewhat antisocial 17-year old high school student who gets higher than average grades and used to be on his school’s track team. Shuuji is very unsure of his initial feelings for Chise and feels that their relationship is more trouble than its worth, though his feelings deepen as the story progresses. At first, he wanted to break things off with Chise, but he then changes his mind and wants to give the relationship another try. However, things get complicated when his first love, Fuyumi, reappears in town. He is the only civilian who knows Chise is the ultimate weapon and promises that he will never divulge her secret. Shuuji is torn by this side of Chise; he loves her deeply, but he is terrified of her weapon capabilities. This causes a very noticeable strain on their relationship and he finally succumbs to Fuyumi’s advances because of this, although it is unclear whether he actually has sex with her as she desires. Shuuji is feeling constantly guilty and useless because his irresponsible actions tend to hurt Chise and because all his loved-ones are dying around him. Later on in the series, he comes to accept his love for Chise and vows to protect her at all costs. He’s the only human being left alive in the end--thanks to Chise’s sacrifice in the anime and thanks to her desire to spare him from annihilation in the manga. The manga ends with him entering a giant ship which claims to be all that is left of Chise--she says she has been trying to get "big and strong" so she can protect him in this way. He is left alone in a spaceship flying away from a devastated Earth, with the human Chise in his heart. It is unclear whether or not the spaceship is an actual spaceship or if Shuji just went insane and imagined the whole thing. The anime changed this into them having another go at life in the memories of his past. In both endings, without food or water, Shuji's fate is unclear.