In a world where guilt and regret can consume a soul, an enigmatic alien named Takopi arrives on Earth with a deceptively simple mission: to bring happiness to a lonely young girl named Shizuka. However, Takopi's understanding of human emotions is as alien as his appearance, leading him to misunderstand the depth of Shizuka's despair. As he attempts to "fix" her sorrow through his advanced technology and naive logic, his interventions spiral into a heartbreaking cycle of unintended consequences. The series, starring Minami Tanaka as the voice of Shizuka and Yoshitsugu Matsuoka as Takopi, blends dark psychological drama with a deceptively cute aesthetic, creating a poignant exploration of trauma, friendship, and the impossible weight of trying to undo the past. As Takopi grapples with the limits of his power, viewers are drawn into a tense narrative that questions whether true happiness can ever be manufactured, or if some sins are simply beyond atonement.