Kazuhiro's older brother, Masayuki, lost everything after failing at work and ended up moving in with them for a while. His wife, Mako, was hesitant but accepted her husband's proposal... Masayuki, who hadn't had sex since his divorce, couldn't suppress his arousal just by having a woman under the same roof, even though he knew she was his younger brother's wife. Mako, troubled by her infidelity with her brother-in-law, lived in constant fear that Kazuhiro would find out, yet Kazuhiro continued to treat her as usual, whether he knew or not...
