When the vice president of a client company, Kosuke, unexpectedly proposes to Tetsuko, she rejects him without a second thought due to her aversion to marriage. Little does she know that this is just the beginning of Kosuke's relentless pursuit. As he urges her to develop feelings for him, Tetsuko finds herself taken aback by his unwavering affection. Each encounter with him leaves her pleasantly surprised by his gestures of love. When he embraces her and shares a kiss, she can't help but succumb to the overwhelming sensation of bliss. Thus unfolds the fierce competition for marriage between a high-status heir and a determined young woman.