Senior Year, a Longevity Immortal Clan System?!

In his senior year of high school, Yang Shen wakes up in a daze to find his beautiful deskmate has brought him snacks as usual. But this ordinary morning takes a sharp turn when he suddenly activates a bizarre system called the "Longevity Immortal Clan System." His first side quest arrives without warning: "The hardest kindness to repay." The mission brief states that he has received help from his good friend Xu Zhu but has no way to return the favor—and as the future master of an immortal clan, such unresolved karma could one day threaten his Dao heart. The system presents him with a chilling solution: kill his deskmate, refine her into a puppet, and keep her by his side day and night to fortify his spiritual resolve. Yang Shen slams the mental button for Option B—over and over again. This system has lost its mind. Cultivation? Immortals? In what world does any of this actually exist? With his sanity on the line and an unhinged system dictating his every move, Yang Shen must navigate the absurd gap between a normal student's life and the insane demands of a "cultivation" journey that shouldn't even be real.