Mariko is happy that her daughter continues to live at home even after marriage, enjoying a multi-generational household. She gets along well with her son-in-law Taku-to as well, but recently he has been doing remote work more often. Furthermore, she keeps catching him masturbating… When asked about the situation, it seems his dick is too big for him to have sex with her daughter. Mariko, who had also been frustrated with her own husband for a while, made excuses for her daughter's family and ended up giving him head. Every time she played with his cock, Mariko felt her hidden desires rising...
