At a ryokan on a business trip, I ended up sharing a room with a married woman's subordinate and ending up having sex until the morning.

"Shihori" suffers from her jealous husband. Her husband's bondage is getting worse every year... Shihori is exhausted from her marriage. Meanwhile, Shihori's ordering error was discovered while on a day trip. Being busy dealing with the mistake, Shihori ends up staying at a business trip along with her boss Mizuki. However, only one room was secured. After a long time, Shihori is alone with a man other than her husband, and is unable to hide her heartbeat.