I Reincarnated as the Villainous Mage in a Scenario Game ~ While Saving the Heroines in Peril in Place of the Useless Protagonist, They All Turned Yandere on Me ~

One day, I woke up to find that I had reincarnated as the villainous mage in an incredibly popular scenario game. Determined to avoid the bad ending at all costs, I threw myself into mastering magic with all my might. However, the protagonist, who was supposed to be the key figure, was utterly useless, and the storyline was on the verge of collapsing. With no other choice, I started stepping in, saving the heroines in danger and defeating enemies in the protagonist’s place. But before I knew it, every single heroine I saved had turned yandere…