Masamune Izumi is a high school student also working as a light novel author. He works with a mysterious illustrator who draws really erotic art for his light novels. In the midst of trying to deal with school and his shut-in sister, he discovers the identity behind this Eromanga-sensei!

Megumi Jinno, the class representative for Sagiri’s class, shows up at the Izumi residence with no prior warning. Her mission is to "take Sagiri to school". How will Sagiri and Masamune handle the situation? Afterwards, Masamune runs into a mystical fairy in a pink dress…

The Izumi House’s empty mansion next door has rumors of being cursed because of continuous misfortunes. But what happens when Sagiri starts hearing piano music coming from the supposed empty mansion?! And how will Masamune handle this Fallen Master?

"It's up to me to take care of my brother!" On a snowy day, I was worried about the authentic cold on the deadline of the outline. Gauze pushed the high fever authentic into her room and began to get used to her care. On the other hand, the authentic sleeping in the bed of gauze can not calm down. At this time, noisy friends also came to visit their fake ... In this winter day, in the face of the little memories that linger in my heart, the actions taken by Saiwu are-.