Working as a masseur, the son-in-law would give massages to his mother-in-law yukari, who had massive tits and suffered from stiff shoulders. However, the son-in-law's true intention was to capture that voluptuous body! The massage became increasingly excessive, and one day when he noticed that yukari was not wearing a bra, his lust exploded! He grabbed her long-awaited stepmother's tits, sucked them more intensely than his wife, and fucked her. Taking advantage of yukari's kind nature, the son-in-law escalated the affair within the household... #Boss P