Three years ago, Fumino opened an English conversation class for adults at her home and started teaching there. She started the class because she felt lonely after her husband left her to care for her father-in-law. However, even though the hole in Kokoro was filled, her body was not able to do anything. One day, while giving a lesson on English conversation for business purposes, Fumino got drunk and fell asleep. A student pranked Fumino while she was sleeping. Frustrated, Fumino ended up accepting it. After that, after the lesson, she started to seek pleasure that she couldn't get alone...