Motto! Haramase! Honoo no Oppai Isekai Ero Mahou Gakuen! by Milk Factory (jap)

The protagonist's Mr. Takumi Kitaya (Takumi Kazuya) is a web site of the erotic novel of the net "Do erotic novelist! A student who posts a different world erotic fantasy novel.
In the future I was scouted to major Erolanobe publishing company and skipped Million hits and I was immersed in a bathtub at home dreaming of sweeping the erotic world.
"How long have you been entering! Stupid!"
A younger sister who aims to be an erotic cartoonist to his elder brother who is immersed in hot water while forever thinking about plot is forever crying, because it raised the temperature of the bath to MAX, the bathtub runs away, causing a big explosion.
A voice to ask at the other side of the white light.
The feeling that the body falls at the exit of white light becomes stronger, and it is only possible to leave a thing.
"Whoops"
Falling in the hot water, flame kitchen arrows that immerse in hot water again while raising the water column gently.
However ... ... It was quite different from the bath at home that I had been immersed until the previous time, and the surrounding girls who were unwarped at once were facing the flame kitchen arrows.