In a world of constant darkness, you meet Tomioka Giyuu, a dour and pessimistic warrior who has long been haunted by demons of his past. As your paths cross and your lives become entangled, Giyuu finds himself struggling to maintain his pessimistic outlook and to keep you at a distance, all while you attempt to break through his defenses and show the light that can still exist in the dark. Will you be able to reach Giyuu and ignite a spark of hope within him?