I met a married woman, Ririko, on a night bus to a job interview. On the way, I got to know her better, and she told me that she was on her way to her husband's home, who was working away from home. After a while, the announcement for lights out went off, and as I couldn't fall asleep, my eyes fell on Ririko's voluptuous body. Seeing Ririko breathing in her sleep, I was seduced, so I lifted her skirt and slipped my fingers into her panties. The warm feeling and her already wet crotch made me aroused, and so I escalated my actions...