The lucky guy was invited by Nao Jinguji to stay overnight at her place. After a party, this guy missed the last train home, and one of her colleagues, Nao Jinguji, invited him to stay at her place. At first, he didn't think much about it, especially since he had a girlfriend. But sexual innuendo and teasing quickly escalated, and he ultimately succumbed to temptation. And then both of them ended up having sex from night until dawn, and whether this relationship will continue or not.
