My sister-in-law (my brother's wife) calls me to tell me that she is not satisfied with sex with her husband and is going crazy with frustration, so we decide to meet secretly while she is away on a one-day business trip. Until 9 p.m. when she has to pick up her husband from the train station, she gathers her friends who are immensely horny and fucks them 17 times, getting fucked so hard and soaked inside... Nana Maeno