Hi

I'm looking for a single chapter of a manga. I'm not really sure whether it was ever released as part of a tankoubon but the story was the size of a single chapter in an average manga

Alright here are the things i remember
- It has been translated to english
- It's about a girl and an older guy
- The sex happens in a motel room

Here are the things i remember but not 100% sure of
- The name was something like "... miscalculation" but not really sure about that as e-hentai does not give any usefull results using that word
- The sex is not forced (maybe a bit coerced though)
- If i remember correctly the guy was the father of one of the girls friends
- The art style seemed to be in the style of Zero No Mono

If i think of any more info i will post it here

Hope somebody remembers this one. It has been bugging me for months that i can't remember the name

Well i found it.

It was: http://www.mangaupdates.com/series.html?id=70522

Thank you to anyone who took the time to read my initial post