Usahara Kunio, a handsome copywriter who works for an advertising agency, has a secret that is hard to share with anyone... Due to being young he experienced psychological trauma, he gradually became obsessed, to the point of dreading the so-called 'sex' between people. Since then, whenever he is aggressively pursued by the women around, his eyes will automatically look at them in the form of carnivores. Day by day, with his appearance, he in turn attracted the 'carnivorous' girls around him, while straining, risking his life to fight against 'that horde of beasts', he gradually understood Know yourself better, and at the same time realize the true meaning of love!! A manga filled with interesting knowledge about zoology,