Enishi-kun wa Masho (Harem) Taishitsu ni Mezamemashita

If you had a "demonic constitution" that allowed you to charm and control others with just your saliva, would you use that power? Enishi is an ordinary high school student who dreams of finding the perfect girlfriend who is cute, kind, cheerful, and loves only him. But when he awakens to his demonic constitution, he finds himself embroiled in a big problem (a harem)...