This is a secret memory that can never be forgotten. Koichi, my husband's best friend, came to our house to play on a business trip. Koichi, who is five years older than her husband, is like an older brother to her husband. I felt happy to see my husband, who was happy to see me again after a long time with a big smile on his face. However, I was attracted to Koichi's charm as a man, which my husband did not have. The more I thought it was useless, the more I could not suppress my burning desire...