Devil Ecstasy volume 2

Saved from a dreary existence of big-boob-related trauma by the flat-chested girl of his dreams, Noboru is ready to throw himself into
their life together...but relationships are tough—especially when your girlfriend is a succubus! With an unstoppable army of voluptuous
demons poised to enslave humankind—only boobless Melulu and virginal Noboru can save the world!!