Ane Haramix / The Older Sister's Pregnant Mix

After Akitoshi lost his parents, he was left in the care of his older sister, Hitomi. Over time, his feelings for her grew into something more.

One day, a strange girl appeared in Akitoshi's life, who introduced herself as a Shinigami. She said she needed the soul of a hero, but Akitoshi's pleas for help touched her. The Shinigami agreed to help, but only on one condition.: Akitoshi was supposed to impregnate his sister Hitomi within a week. In exchange, she promised to give him another ten years of life.

Realizing that he had no other choice, Akitoshi went to his sister's room.