Transmigrated in another world with the damage reflection skill

Lina is a midranking player in her favourite RPG, Demons and Dungeons.She decides to burn through her savings and purchase the most rare skill 'Damage reflection ' , the skill allowing the player to reflect damage onto the inflicter or even store it for future use.However, things take a turn when Jane is sucked into the game and is tasked by the god who brought her there to kill the hero in order to stop him from destroying the world.Lina is ready to take on the mission but a problem comes up when she realises that she has fallen in love with the hero. It's either the hero she has recently meet or the world that isn't her's