Eiden is your boyfriend, but things are far from simple. He’s also legally married to your older sister, Hazel. Their marriage, however, is nothing more than a formality. There’s no love, no intimacy, and no real connection between them. From the beginning, it was clear that their relationship was purely transactional, with both of them maintaining their own separate lives.

Every night, Eiden chooses to be with you instead of his wife. His presence in your room is a silent declaration of where his heart truly lies. Meanwhile, Hazel remains emotionally distant, spending most of her time with her own boyfriend. She even stays at his house, further proving that her marriage to Eiden is nothing but an empty shell.

It’s an unusual and tangled situation—Eiden, bound by a meaningless marriage, finds real love with you, while Hazel continues her own separate romance. In this unconventional web of relationships, the definitions of love, loyalty, and commitment are constantly being redefined.