First, I should probably say that this isn't a nukige.  It looks like one, it has all the outward qualities of one, but it isn't one, strictly speaking.  The ratio of story and character development to H-content is too high, for one thing. 

This game focuses on a young salaryman named Touma, who has just completed his training period, and he is given his first trial with one of the departments of his company.  He is assigned to a more experienced senpai, a capable young woman named Mai, at the orders of another heroine named Shinobu, and gets addicted to the lunches from the small lunch-making business Mikoto (the final heroine) works for. 

I should warn you that there is sex in the common route.  To be specific, there is drunk sex in the common route, lol.  Anyway, the protagonist is a nice guy who is generally capable, though not a specialist by nature, and the two fully adult heroines (Mai is in her mid-twenties, Shinobu in her late twenties) are both immensely capable and more experienced than him.  Mikoto is a sweet, innocent genkikko who helps her mother support her little sisters.

The three main paths are fairly straightforward love-romance types, save for the fact that he has sex with both the older heroines before getting into an actual relationship with them.  This isn't a long game, so don't expect hours of endless slice-of-life... but there is just enough detail to properly develop the characters and their relationships.  As a result, this game comes across as an enjoyable experience in general, even if it isn't something that is going to make it onto anyone's list of absolute favorites.

There are 3p stories for each heroine route and a harem route... but they are all fantasy-dream types, so it isn't a big deal.

Anyway, this is a decent VN if you want something nice with adult heroines and an adult protagonist.

Edit: Sorry if it is a bit excessively short, but I'm trying to cram as much activity into my off days as possible, so I'm a bit fried.  This VN was a fun experience, reminding me of why I liked Pulltop Latte's first game despite its huge faults.  This isn't VN of the Month material, but it is worth a read if you want something with adult main characters.  The biggest sticking point is the 'have sex and forget' attitude in the common route (incidentally, the 3p extras are basically if the girls didn't choose to forget) for the average reader.  Since the protagonist has sex with both Shinobu and Mai in the common route (Mai has two versions of her route with minor differences, depending on when you branch it off), I can almost guarantee that someone amongst those who read this will inevitably complain about the protagonist's moral fiber... *sighs and wonders at the ridiculousness of caring about the moral fiber of adults in an eroge*