Shusuke Hisada and Sakina went on many dates and eventually got married in an ordinary and happy marriage.
Shusuke was happy with his wife Sakina and their mundane but happy life and sex.
However, she has a secret: she used to be an underground idol in the past.

Sakina used to be a member of the underground idol group "Mukohaiyohoi" under the name of "Natsuno Hidamari".
The group's style of performing was extremely extreme, with the emphasis on close contact with their fans,
Sakina has been active in her idol career as she was forced by the management to do so, using the so-called "Gachi-Koi" method, which is a way of encouraging fans to fall in love with her.
However, this was never what she wanted,
Even now, three years after she stopped her idol activities, she is still haunted by the fact that she has played with people's psychology.
She doesn't want to do this anymore.

Sakina wanted to live an ordinary life. From now on, she and her beloved husband will always be .......

However, her ordinary happiness was easily destroyed by the past.

You're Hidamari-chan, aren't you?

A fan named Itsu Okimiya suddenly called out to Sakina on the street, a fan who had a serious crush on "Natsuno Hidamari".

Sakina finds out that she is married to Itsu Okimiya.
But Sakina, who used to be an underground idol, is now a fan of Hidamari Natsuno,
Sakina does not want her husband to know that she used to be an underground idol with an extreme line.
However, this only ignites Okimiya's anger and outburst,
His distorted thoughts and desires are directed toward Sakina....