Yuiko & Leo: she, a little animal lover 'too extroverted and blundering; he, a laconic-looking young savage who grew up in Africa and denied relationships with people. Needless to say, when he moved to the school of her, their lives will inevitably destined to mingle! But Leo also hides a terrible secret, that weighs on him like a curse ... whenever he sees blood, Leo becomes a kind of wild animal! How will Yuiko this intricate situation?