These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Big Lipped Alligator Moment: During Tatsuki's route, while you and Tatsuki go to help set up for the summer festival. Hiroyuki and Tatsuki end up rushing to the bathroom after eating expired manju. Botan turns out to be in one of the stalls, out of toilet paper. If you pick the option to help him by giving him an empty roll, a giant Chuukichi starts attacking the village. Hiroyuki is given a weapon to stop him. Not only that, it gets weirder. Hiroyuki, right out of nowhere, turns straight, attracted to human girls, and the whole story turns into a typical weekly Shounen manga. Naturally, it's lampshaded in the segment you get afterwards where Shigure and Chuukichi tell you what you did wrong. Afterwards, you end up having to restart the day and no one speaks of it again.
Ensemble Darkhorse: Tappei is proving to be rather popular, easily having more fan-art (specially of the NSFW variety) than some of the nine guys. Among the nine guys, just ask groups of fans who their "husbando" is.
Fanon: There are a lot of theories floating around about some characters about whom not much has been officially revealed. One particularly popular interpretation of Torahiko is murderous Yandere.
To explain, Torahiko is the only character so far who displays overt affection for Hiroyuki. The fans have jokingly exaggerated his obvious interest into a Fatal Attraction-esque obsession. It also helps that the game takes place in a small, homely, peaceful village in Japan during the summer, remind you of anything...?
Some fans jokingly suggest than the D in the D-Get patch on Torahiko stands for Dick-Get.
Fan-Preferred Couple: Judging by the fanart, the most popular Hiroyuki pairings are with Tatsuki, Kounosuke, and Juuichi. Ironic, since this art existed before the patch which completed Tatsuki's and Kounosuke's route was released.
Funny Moments: Mixed in with the heartwarming are some of the oddest and bizarre bouts of humor. Often you'll have to reload your game and pick a different choice to find them, but they exist.
Heartwarming Moments: The game is practically built on these, and it's a never ending assault. Even the two released routes have them by the bucket-load.
For instance, some of the characters like Torahiko have no sex endings so far, yet there is so much Rule 34Fan-Art of them.
On the Bara Boards (Not Safe for Work), there has sprouted a meme of taking Morenatsu character graphics and adding text to them, à la LOLCats.
Some of Hiroyuki's ridiculous goofyness has become the subject of humor, an infamous example being the "Is that a piano?" bit from Kouya's route, during a scene in which Hiro hears him playing guitar in a forest.
If you make a wrong choice on Tatsuki route, it is revealed that he is an android created by Shigure, who then attempts to kill Hiroyuki now that he knows. Tatsuki self-destructs in front of Shigure, saving Hiro and destroying the building.Then the game asks you to reload a previous save.
Shin's rape scene. It's quite awful, especially if you've already gotten Shin's good ending, because you're basically violating your childhood friend who always loved you. You are a HORRIBLE PERSON, you MONSTER.
One True Threesome: Kyouji and Soutarou seem to be heading this way. The translated scripts show that Soutarou and Kyouji are pretty much the same route which would mean it's either this or the route branches near the end.
Pervert Dad: The artist Gamma has drawn Tatsuki/Tappei, implying the possibility that Tatsuki (if he is a virgin) may be an object of Tappei's lust.
The Scrappy: Hiroyuki. Some people don't like him due to the writing inconsistencies, the fact that he can potentially rape the hasubando your trying to romance if you pick the wrong choices or simply because he's human.
Tear Jerker: When you reach the final day of the game, it's very hard not to feel depressed that the story is about to end. While it may not invoke tears, don't feel ashamed or alone if you do feel a tightness in your chest as the ending plays.
In the aftermath of the 2011 Touhoku earthquake, tsunami and nuclear meltdown, there was uncertainty about whether all the Morenatsu Project team members were all right and accounted for. Eventually, a blog posting revealed they were all fine.
Values Dissonance: In Tatsuki's route, you have to snap at him for constantly being depressed in order to get his ending. However, snapping at Kounosuke for his rude behavior? Results in Hiro turning into a jerk and treating him coldly the entire rest of the vacation. Nanafuse even pops up to give Hiro a scolding for his actions. It's a bit jarring to see what you'd think would be a chance for Kounosuke to have development similar to Tatsuki get treated like you did something wrong.