It's been two years since I married into my husband's family home. I've had everything I could want with my husband and my father-in-law, but the only thing that bothers me is that my husband is too kind. He's not very good at sex, and only does it on my ovulation day every month. That day, after sex, I took a shower and tried to go back to the bedroom, but my father-in-law was waiting for me and pulled me by the hand... He licked me all over with lewd eyes, different from his usual gentle ones, and thrust his glaring cock into me. He then poured a huge amount of sperm into me, as if to overwrite my husband's sperm...