Beautiful mother・Aoi lives with her son. Although every day is happy, she feels lonely because her husband has been away on overseas assignment for a long time and they haven't seen each other in ages. One day, her son's best friend・Yu comes to stay over for club activities. Yu, who has harbored feelings for Aoi since childhood, suddenly steals a kiss from her. Despite herself, Aoi feels her heart pounding uncontrollably. Afterwards, when Yu presses her again, he steals another kiss from her. The illicit desire that Aoi had been suppressing ignites…
