Calamity 2007: I don't getit Spaztique, how do you want us to feel about Brolli? Because you have mentioned before that people wanting to see him die is a reaction you're going for. I'm not complaining, I just find it strange that your giving him all these heartwarming moments if that was the reaction your going for.
Captain Obvious Reveal: It's obvious from the start Yukari's meat is made of people, but the fact that Brolli and the other Gappies (along with some audience members) don't suspect a thing drives home how much these unsuspecting kids trust Yukari. Then you realize it's not just any people: it's every previous Gappy. It doesn't help that minus the part about the Gappies, Yukari gapping in humans for food for the Youkai is canon.
Kicking off the incident is WAVE's "Breeze Temptation," an arrange of "Tengu is Watching."
For the final battle, the first half of Tutti Sounds' "The Light Of Faith." The latter half, starting at 2:56, is used for Brolli's last stand.
In the middle of the previously listed "Light of Faith," it switches to an orchestral arrange of "Oriental Dark Flight" (specifically, the part at 2:30) when Marisa finally fulfills her promise to Reimu to stop Brolli if he got out of hand.
For the ending/end credits, milktub's tearjerking Purest Sky And Sea. Then, when the credits fade to the fate of Brolli's beret, it switches to a slowed-down, somber version of Foxfactory's Wonderful Heaven.
Designated Hero: Even though he's the "hero", Brolli doesn't really do anything heroic at all up until the end of the story. Although even then all he did was give Tenshi exactly what she wanted (his death)... so not really sure that counts as being heroic.. It's pretty obvious that his arrival to Gensokyo and his behavior ends up making things worse for pretty much everyone.
Ensemble Dark Horse: Among Diamondback's beasts, it seems Lepus is the most well received among the fandom. It could be because he get the most screentime, is funny, helps Brolli with women, and is actually the nicest (that being the least Jerkass) of the beasts.
The characters rarely say "no," but rather opt for "not really." This is a Japanese language convention, as it is impolite to directly say no.
Mokou mentions her father was humiliated and killed trying to attain one of Kaguya's impossible requests. In the original Tale of the Bamboo Cutter, only one of the princes was killed trying to get the cowrie born from swallows.
When Brolli is moved via Sakuya's time-stop effect, he suffers from formication, one of the side-effects of mild decompression sickness.
Six hundred million cubic kilometers, the amount of space Brolli's pockets will contain affect learning the magic of the Codex Puteus, is how large the Pacific Ocean is.
All of the tactics Lepus uses are legitimate pick-up artistry tactics, from negging to embedded language to focusing more on figuring out the girl than revealing Brolli's traits to make him seem more "mysterious." In addition, his advice about putting a pillow under the waist is to increase the "angle of attack".
There is now a canon Touhou game titled Urban Legend in Limbo that involves a self-centered high school student coming to Gensokyo and nearly destroying it.
Hell, even Len'en (a Shoot 'em Up game based on Touhou) portraits a fantasy world and some outsider humans coming to Mugenri (the equivalent of Gensokyo), where they gain powers and resolve incidents. However, later games (Brilliant Pagoda or Haze Castle in particular) show that some of these outsiders are becoming corrupt and the residents are planning to kick them out. Coincidence.
And now in the territory of official works, in Forbidden Scrollery, more specifically, chapters 46-50, it has brought into the thing some plot points used in Spaztique's webcomic, like the Youkai's importance to Gensokyo's ecosystem, and Kosuzu, being influenced by a Youkai by using the titular scroll and using that power intending to bring balance to Gensokyo.
Hype Backlash: It may have been the best thing Walfas had to offer in the early 2010's, and a LOT of the community hyped it up as so- Even TV Tropes is guilty of it! However, fast foward to 2020, most people would tell you it's not as good as others said it was.
Fans who haven't seen the full movie wish they were in Brolli's place. While many who have seen the full movie and its Downer Ending changed their minds, there are also fans who have seen Diamond In The Rough in its entirety and missed the point completely...
In a few fics, writers tried to find workarounds solely based on Diamond In The Rough's plot instead of story mechanics. For example, instead of Yukari gapping in the main character, it's another character, using the excuse, "Yukari didn't gap him in, so he's not a Gappy Stu!" These characters then proceed to woo all of the women in Gensokyo and become the big hero with no meaningful conflict to stop them.
Arturo, the previous Gappy, takes a supersonic flight over the Moral Event Horizon by murdering children and younger to have sex with Yuuka, then going off to rape Keine. Later revelations have nearly made him hit lightspeed when it's revealed that Yuuka was only bluffing, and only would have sex with him if he refused. When Arturo hears this he rapes her.
Most of the expressions during moments that are meant to be serious look comedic. Take Episode 10 for example, when Brolli kills Kaguya. She looks more surprised than gasping for life. Episode 13 also has the Brolli and the SDM residents look so shocked that it just looks borderline hilarious.
Yukari's evil grin whenever she appears to gap somebody away. It's taking up her whole face!
Sometimes, when the characters cry, they use the sweatdrop object. It's just plain [Special Effects Failure]] due to how silly it looks.
Brolli's scream in Episode 19. While it's meant to be Tear Jerker, it sounds like the poor guy stubbed his toe.
The reveal of the source local Gensokyo beef is rather tryhard, too. Yukari's a youkai, what were you expecting? That she's a vegitarian?
Rescued from the Scrappy Heap: The Diamondback Beasts. Originally based on blatant Marty Stu characters, retooled into more likable or compelling characters. ColonelDiamondback has adopted many of their traits for his own videos.
Byakuren, Sanae (by extension also Kanako and Suwako) and Nitori, but especially Nitori. All of them betrayed the heroes, working together with Tenshi and attempting to get rid of thousands of innocents only to kill Brolli even though by that point he is fully aware of the chaos he has caused AND tries to fix it for non-selfish reasons... although the only chaos actually happening is because people want Brolli dead, making everything he does pretty meaningless. Byakuren seems to regret it, while Sanae will live in the knowledge that Tenshi has one-upped her with black mail and basicly killed an innocent if stupid sixteen year old. But Nitori? She gets cheered as a hero by fully using the scapegoat that Brolli has now become, even though she was basically responsible for the destruction of Kappa Valley by willingly giving Brolli everything he asked for without thinking of the consequences, then paints herself awesome for "killing" him. Worse, the only person who knows the truth gets painted as a liar.
Ships That Pass in the Night: Inverted with Marisa and Reimu. In a normal Gappy Stu fic, Reimu and Marisa are inseparable, acting as Those Two Guys. In Reel 1, Reimu and Marisa appear together in only one scene (outside of flashbacks) and exchange only eight lines of dialogue. Reel 2 gives them just as little screentime together. Possibly an aversion when you take into account that Reimu and Marisa never appear together in the games until the endings. Some have complained that for a story thats supposed to focus on a Parody Stu, it makes Marisa and Reimu Unintentionally Unsympathetic.
Vic, who only appears briefly in the outside world scenes, but it really kicks in when you realize he's a Gappy who escaped Gensokyo, but not after killing his former friend Arturo and then accidentally killing a field full of children in revenge against an innocent youkai. Allegedly.
After the incident, Gensokyo as a whole: two villages have been virtually destroyed, an innocent boy has been killed (although how innocent he is after what he does in Gensokyo is debatable), the "villains" who got away with it are being celebrated as heroes and can't come clean without causing another (even worse) incident, the real "villain" did it because she was fed up with everyone's mistreatment of the boy, and all of his friends have either a Heroic BSoD, cross the Despair Event Horizon, or have a Fate Worse than Death. The only people that viewers can't feel sorry for are Jack, for representing everything people do hate about Marty Stus, and Yukari, who only gapped Brolli, and all of the other children, for pretty sinister reasons.