Hitozuma Eriko no Futei Kiroku

Eriko is a married woman who, in the midst of her boring daily life, seeks stimulation and exposes her naked body on social networking sites out of curiosity. However, just when she was getting tired of that, she received a DM asking her if she would like to meet and talk. She would normally ignore the message, but her curiosity got the better of her and she stepped into the doorway of infidelity....

(Source: pixiv, translated)