The heroine is the daughter of Kamijou Touma and Index. She also has a younger brother who looks like a loli.
One day, the author opened his mind...
Because he likes anime so much, but can never travel through time, the darkened author who has resentment is the product of writing.
This is a negative product of boredom, loneliness, and entanglement, so please don't expect logic or anything. It's all unfolding, but there are indeed old jokes.
The male protagonist is tentatively named Five Yuanshen.