Suddenly transferred to a new city, I moved to an unfamiliar place and found myself on the verge of marriage just two months later. However, worried about Sakura's unusually low spirits, I confided in my coworker Nishijima. Soon after, Sakura gradually regained her energy, but watching her change filled me with deep-seated jealousy and anxiety toward both of them. Just as I began convincing myself my fears were unfounded, the day before our wedding, I witnessed a scene that shattered all my happiness in an instant—leaving me utterly devastated.