In recent times, with the declining birthrate becoming a serious problem, the consolidation of schools, including those of different races, has become necessary. As a model case, Iris, an elf princess, transfers to Ark Academy. Iris is a model student with impeccable conduct, but she harbors a secret problem. "Please, pour your seed into me too, teacher ♡" The country has established a system for mating with demi-humans, commonly known as "assistance." The elf teacher was chosen as the supporter for the female-only elf race. A diligent student, a beautiful elf princess. It was a national obligation for him to have children with her. The teacher struggles with his feelings about acting with the innocent and lovely Iris. However, with her pure eyes, she pleads for "assistance"... A birthrate countermeasure that transcends racial boundaries!! Are you ready with your seed?