I was reincarnated as a minor supporting character, not even the main male lead, in a romance fantasy web novel my sister was reading. If my memory serves me right, this guy is destined to die in a war in place of the main male lead. I've made up my mind. I will stay away from the main characters, stay healthy, and go back home. You two can handle the romance! I'll just borrow a bit of the fantasy, okay?