A video arrives on his smartphone. His best friend proudly sends him a record of their affair, and it shows his real mother, Kirioka Satsuki, the man he admires more than anyone else. On screen, he sees his mother clinging to his best friend's cock with a lustful, slutty expression she never shows her son, her eyes rolling back in desire for a creampie. The uncensored reality vividly depicts her ripe private parts being filled with the young man's seed. The peaceful mask of everyday life is shattered to pieces, and the cruelty and eroticism of the process in which his real mother is dismantled as "someone else's woman" is revealed. This is the worst NTR documentary, smearing the bond between parent and child with despair.