かけひき describes strategic maneuvering between people, especially the subtle push-and-pull of romance, negotiation, or trying to gain the upper hand. It is more vivid than simply saying "a game" because it suggests hidden intentions and calculated moves.
In the song, the narrator says that if their relationship is just かけひき, he cannot call his devotion a waste. The word captures the tense romantic mind game at the heart of the lyrics, making it memorable and useful for understanding Japanese relationship vocabulary.
"RED ZONE" by Janne Da Arc is a love song played as a game of nerves. It opens in a room lit only by a candle about to go out and the moon, just before dawn, a room the singer calls 静かすぎる (too quiet). Then comes the line that stings: 「今までの kiss の中で一番好き」 (the best of all the kisses so far). She builds him up, and he knows there is a punchline he won't be able to laugh at: 上げるだけ上げといて (raising me up as high as you can). His plea is blunt: 期待させるだけなら もうやめてよ (if you only want to get my hopes up, stop it already).
The red zone of the title fits a man pushed to his limit. He keeps his hand held out to her, yet she is 人の限界を試しているみたい (like she's testing how far a person can go). He hands her the pen, 続きは君が書けばいい (you can write what happens next), and admits 僕を生かせるのも殺せるのも君次第 (whether I live or die is up to you), which is a lot, but that is the point. Learner tip: ジョーダンじゃない is 冗談じゃない written in katakana, "no joke" or "you've got to be kidding". And メンソール (menthol) is her menthol cigarette, sighing smoke while she looks prettier than yesterday. He says he won't mind if this push and pull, かけひき (tactical bargaining), costs him everything. The last questions hurt most: もう僕じゃなくてもいいの? (is it fine now if it's not me?)