“Huh? Who sent me this?” muttered Tsunaki Eiji as he received an email.
“If you go to the convenience store now, you'll be able to see Hironaka Kotona's secret kink.”
He found his neighbor's name written in it.

That's the landlady's daughter, Hironaka Kotona.

She's a cheerful girl who greets me normally.
What's it with her secret kink?
Who sent me this anyway? I don't remember ever seeing this email address.

So what should I do?
After some worrying, Eiji went to the convenience store.
Even since he witnessed the absurd scene there, his environment started becoming more and more lewd…

[Translated from the official site]