Kunoichi_lover is a combination of two Japanese words: "kunoichi" and "lover". Let me break it down for you.
1. Kunoichi (九のいち): In Japanese, "kunoichi" means a female ninja or a woman skilled in the art of deception. This term is often used to describe a woman who is secretive, cunning, and seductive in a ninja-like way.
2. Lover (ラバー - 'rabā' in Romaji): This word simply means a person who loves or is in love with someone, or someone who enjoys sexual activities.
So, when you combine these two words, "kunoichi_lover" refers to an individual who has an affinity for women (or perhaps themselves identifying as a woman) who embody the qualities of a kunoichi - stealthy, deceptive, and seductive. This tag would be associated with porn videos where the actress or performers possess these traits, making the viewing experience more appealing to those with a preference for this particular theme.