A false accusation - a couple suspected on a humid day

His wife, Kimika, has always loved her husband Masahiro, who has suffered from erectile dysfunction after being laid off from the company she had worked for many years. However, one day, Kimika is raped by her husband's younger brother, Hiroyuki. Then, Masahiro accidentally witnesses this, and is furious that Kimika had seduced her. Kimika, who somehow wants to clear up her husband's misunderstanding, orders Masahiro to suck another man's cock. Yes, Masahiro felt a lot of excitement in her crotch when she saw Kimika being raped by her younger brother...