My Inner Darkness Is A Hot Anime Girl! is a 3D turn-based RPG that follows the story of a descendant of a legendary knight who struggles with intrusive thoughts. That is to say, thoughts and recurring memories he would rather not have. No matter how hard he tries to deal with them, he can't seem to deal with them. All hope seems lost until a kind figure from his dreams helps him deal with his thoughts. Of course, this is when trouble starts to arise, a manifestation of his inner darkness, named Kard Sens, appears before him and tries to keep him in line, because without the excess darkness in the MC's heart, she won't be able to maintain her lovely figure.