Synopsis After a whirlwind arranged marriage, Y/n and Sanzu moved to America, where they built a life over four years. Sanzu, a prominent businessman, and Y/n, a talented engineer, created a seemingly stable partnership. However, their return to Japan for one of Sanzu's most significant projects reignites old flames and unresolved feelings. Back in Japan, Y/n is assigned to work closely with Ran Haitani, her ex-boyfriend and a key figure in the project. Ran never got over Y/n and sees their reunion as a chance to rekindle their romance. As Y/n navigates the complexities of her current marriage to Sanzu and the rekindled feelings for Ran, she finds herself torn between her past and present. Amidst corporate intrigue and personal turmoil, Y/n must decide where her heart truly lies, facing the ultimate test of love, loyalty, and self-discovery.