"I'm not doing anything..." Maruta W utters, her voice a sultry whisper as she balances her phone between her ear and shoulder. Her husband, Maruta H, listens, unsuspecting, while she tries to mask the sounds of her lover's body slapping against hers. The Japan-based couple's amateur video captures the raw, intimate moments of her infidelity, leaving him to grapple with the painful reality of her deception.