After she got pregnant, Hiroshi decided on an 'oops pregnancy marriage' and is currently in the process of registering their marriage. Her mother lives alone in her family home within the same city... With it being her first pregnancy and childbirth, he has been relying on his mother-in-law for various things, and opportunities to visit the family home have increased, such as after returning from the hospital. However, since she was pregnant, they were inevitably living a 'celibate life,' so he couldn't help but feel an indecent urge upon seeing his mother-in-law's swaying breasts under the same roof!
