The Parasitic Guide: Draining S-Rank Sentinels

Lin Nan awakens 500 years in the future—a polluted world where Guides are humanity's lifeline. There's just one problem: her spiritual entity is a parasitic vine that drains energy instead of purifying it, making her the academy's biggest failure. Facing expulsion, she's forced into a practical session with an S-rank Sentinel. She expects rejection. Instead, he goes feral, begging her to drain him dry. Turns out her 'useless' ability is exactly what the most powerful Sentinels crave. Now every elite wants a taste, and Lin Nan must navigate a dangerous web of desire, power, and survival.