As an omega, Masaki Fujiyoshi had always struggled with the expectation of being a stay-at-home parent and spouse to his loving husband, Hiromu. Despite societal pressures, they finally found happiness in their domestic role after facing challenges to start a family. With the arrival of their son, Hikari, the family moved to a child-friendly neighborhood where they began to build close relationships with their beta neighbor, Yuuki, Hiromu's colleague, Matsuo, and a lone father who frequently visited the park.
Although their life seemed perfect with Hikari approaching his second birthday, their past threatened to disrupt their contentment. Individuals from their pasts returned with motives unknown, causing Masaki and Hiromu to question their intentions. In order to protect their bond, they must navigate these uncertain waters with caution.
