Reincarnated as a Support Character, I'll Break the Game With My Knowledge

Living the dream of reincarnated life in his favorite romance RPG, "m9"! Or so he thought, but he was reincarnated as Ash, the "helper character" who sacrificed his life for the awakening of the game's protagonist, Rayen! Even though he was supposed to be reincarnated, he is destined to be sacrificed if things continue as they are. However, if he avoids this, Rayen will not be able to awaken as a hero, and the world will be conquered by the Demon King's army... "I absolutely do not want to die!" Ash decides to fight against his fate in the game! Utilizing his knowledge of the game from his previous life, he contacts the game's strongest character and learns swordsmanship and magic in order to survive. Will Ash be able to overturn fate and save the world alongside the hero...?!