In the Martial Age, F-rank Caspian is a nobody—until a “Symbiotic Pact” links him to S-rank ice queen Selena. Her cultivation boosts his EXP; his pain transfers to her. While she risks her life in secret realms, he games in his dorm and still levels faster. A simple paper cut drops her in agony. To avoid shared pain, Selena becomes a ruthless protector, crushing anyone near him. Caspian sighs: “Stop grinding… I’m getting OP.”