| Episode | Title (English translation) | Synopsis | |---------|----------------------------|----------| | 1 | “The Proposal” | The couples discuss the swap; Akari is hesitant, Miyuki curious. | | 2 | “Crossing the Line” | The swap night begins; the couples separate. | | 3 | “Awakening” | Both women experience sexual pleasure they had forgotten. | | 4 | “The Morning After” | Return home; awkwardness and guilt. | | 5 | “Secret Meetings” | Ryota and Akari begin meeting secretly without their spouses. | | 6 | “Unraveling” | Kenji discovers hidden photos on Akari’s phone. | | 7 | “Confrontation” | A four-way argument reveals deeper marital wounds. | | 8 | “No Return” | Open-ended finale: two couples separate or attempt an open marriage. |

: A central female protagonist with brown hair and eyes, known for her involvement in the initial swap.

The series follows the daily lives of Takanori and Ririka as they navigate their careers, relationships, and personal growth. Takanori, a former baseball player, is struggling to find a new career path, while Ririka is dealing with the challenges of her job as a kindergarten teacher. As they try to keep their promise to meet again, they face various obstacles, including their own insecurities, misunderstandings, and interference from others.

While a detailed plot summary isn't provided here, the anime likely sets the stage for a thought-provoking narrative that could span themes of love, loss, and the irreversible nature of certain life choices.

Here is a brief summary of each episode in Season 1:

The series is categorized as an and explores themes of infidelity (NTR) , romance, and the complexities of human emotion under extreme circumstances. It delves into the tension between established trust and the pursuit of carnal passion, emphasizing the idea of a "night of no return" where the characters' relationships are permanently altered. Release and Availability