Goodnight Sex

"Oyasumi Sex" (Goodnight Sex) is a Japanese manga series that began publication on May 5, 2014. The narrative unfolds across a sequence of chronologically titled installments marked by specific late-night and early-morning timestamps, including "Oyasumi Sex am2:00," "am3:00," "am1:30," "am4:00," "am4:30," and eventually "am10:00," which was released years later on March 2, 2023. These time-stamped chapters frame intimate encounters occurring during the quiet, vulnerable hours of the night and into the morning. To provide readers with a cohesive experience, an omnibus compilation volume titled "Oyasumi Sex: Soushuuhen" was released on December 31, 2016, collecting the preceding serialized works into a single edition. The franchise also expanded its thematic scope with a special release titled "Natsuyasumi Sex" (Summer Vacation Sex), shifting the setting from the routine of late nights to the leisurely atmosphere of summer break. Together, the series explores romantic and physical relationships through the lens of specific times and seasons, emphasizing the emotional intimacy shared between characters when the rest of the world is asleep or away on holiday.