The reason sex with her husband has not gone well is not because of age, but because of her husband's sexual proclivities. A man with a cuckold fetish asks a junior colleague at work to cuckold his wife. Although she verbally refuses when he makes a move on her, the feeling of being desired for the first time in a long time reminds her of what it means to be a woman. Her husband's twisted love awakens a new sexual proclivities in the wife. Because she loves her husband, her actions with other men gradually escalate. Is the Mirai that awaits the junior colleague who casually agreed to the offer heavenly, or...?