Yui, a married woman who participated in the alumni association but had difficulty returning home due to a car breakdown. - She was worried about her ex-boyfriend Satoru, but she lied and she lied when she stayed at her her girlfriends house so as not to make her husband worry more. Goes to bed while feeling guilty. - The two who got sweaty in the room where the air conditioner broke continued to have sex for 48 hours with instinct.