30 Years after Reincarnation, it turns out to be a Romance Fantasy Novel

After being reborn and living for 30 years, I realized that my life was actually a romance fantasy novel? …Where are you looking? Becoming a wizard’s s*ave, living as an experiment subject, then as an assassin, from a mercenary to a soldier, and finally becoming a knight. This is the story of a man whose life spans across different genres by himself.