As usual, tropes referring specifically to one character's assets go on the character sheet. Anyway, Ride Alone Complex provides examples of:
Age-Appropriate Angst: Zig-Zagged with Kenoko. Counting summers, she's 78 years old, but she's still 18 years old physically due to having an unaging body. She angsts about the fact that most of her old friends are gone with the attitude of an 18-year-old. Michelle, on the other hand, subverts it, by acting like a nineteen-year-old girl who is having too much fun.
Please note that Michelle is a 97-year-old Showaborg who looks like she's about one-third her actual age. That would give most 97-year-old women a reason to act like that.
Asskicking Equals Authority: What appears to be a primary motivation for tapping new Riders, considering how Rebecca and Haru got in and how eagerly Xander was lifted to OsuTrooper.
Authority Equals Asskicking: The OTHER motivation for tapping new Riders - namely inspiring them into this trope, considering how Kenoko got on board. May also play a factor in retention, if Pacifica's debut is any indication.
Brick Joke: Invoked continuously and furiously by Haken and Axel regarding discarded or swerved-away elements from theirpriorgames.
Broken Bird: Kenoko's defining trope pre-Calibur, and one Haruka swerves into in places during Week 03. Then there's Henne Valkyria, whose spontaneous ejections of Raven Orphenoch feathers make it a bit too literal.
Haken: So we got a little more in-depth about this entire mess last night, and we've come to the conclusion that it wasn't Couch that was right, but Gue. Furthermore, I have become Gue. Guys. Help me change back. Please.
Dangerously Genre Savvy (initially Wrong Genre Savvy): Akebara acts like this at times, being extremely familiar with the Rider Wars of the past. The only problem is that most of the information was imparted to her by Wyll.
Dare to Be Badass: Akebara, to Rebecca, during their first meeting. Which is ironic, because she was on her way to fulfill such a dare from Wyll at the time.
Death Is Cheap: So it appears with anyone using the uTOH template for Undead or buying up similar powers. Including Wyll, who didn't even know he BOUGHT resurrection when brought back through his contract with Leksi.
Defeat Means Friendship: Or, in Miyami's case, devotion based off of infatuation due to Kenoko's ranks of the Distracting Looks feat. This is at least the second time that this has caused a situation involving one of Axel's characters.
Distracting Looks winds up not even factoring into Henne and Kyon being "Befriended."
Fridge Brilliance: Much of Axel's writing style seems to rely on it - for example, Nigo's threats to the FangOreo are more Narm than anything... until you find out that Nigo is just everything Kenoko represses, and she was never any good at making threats.
Good People Have Good Sex: Variant explored between Haru and Akebara - Ake is normally apathetic to the idea of sex and is implied to have engaged in it lovelessly for reasons of subterfuge. When Haru kisses her, the emotional response blows Ake away.
Somewhat subverted with Tenpai later "kidnapping" Becca, in that no one (except maybe Axel) knew if he's really an ally, due to his preferences towards doing things his own way. Not to mention that she stayed with him willingly. Once again, Kenoko is not pleased.
Played more of its own accord with Kenoko settling with Rebecca after all of her KRV relationships wind up irrevocably burnt. (Excepting maybe Haruka, but then she's already married and constantly barred from using Charm Person to set the mood.)
Though Kenoko merely points out that she doesn't have to use it to set the mood...
Let's Get Dangerous: Wyll, of all people, demonstrates this in Akebara's backstory - after doing nothing for all of the prequel, he turns up and dusts a Fangire in a heartbeat with his never-seen-in-KRV Proto-Decade Driver. There's also the part where he and Aelita completely rolled SHOCKER's Alaska facility singlehandedly, mowing through pseudo-Riders like mooks and making Nineball look like trash.
Akebara demonstrates her own during, of all places, her seduction of Haruka... where the entire thing is carefully plotted on her part. Watch that girl.
Love Triangle: Haru-Korin-Miyuki-Xander-Ake is a weird setup where:
Motive Rant: Kenoko has one after Haruka refuses to let her turn down a "job offer", related to her time as the brainwashed SHOCKER Rider-2. Hearing her admit to enjoying herself during it is creepy, as well as her bleeped out threat concerning Yukari and Kaoru.
Despite a general "Neutral Zone" tone throughout the game wiki, Haken's own liner notes eventually spiral towards this regarding the foundation of RAC and a few loose ends in KRV that this game finds itself scrambling to gloss over/swerve away from.
The official line seems to have been refined to "Touhou meets Kamen Rider" by the middle of Week 04: everyone not on the "Evil" chunk of the alignment chart is friendly to one another, even when they're tearing into each other with vicious debates and/or henshin firepower that pushes M&M's limits.
Parental Abandonment: Let's see. Kenoko's parents are dead (and she had all but run away from home in KRV to begin with), Miyuki and Korin have been kicked out (well, Korin ragequit, but it was totally justified because her parents sucked), Xander doesn't have any (It Makes Sense in Context), Rebecca's are presumably in America, Ake's are both dead (see Self-Made Orphan on her page), Leksi's unseen uncle foists her off on the "Peanut Gallery" at the earliest opportunity...
And now Vincent joins the fray. as even Alex claims to not know who provided that X chromosome. He does know. He's just staying quiet at her request.
Back on the meta scale: Hakenruka's assortment of character body pillows (ostensibly for those nights when Haruka can't have the real deal), pulled out with each IRC signoff. Usually a point of contention, but Actually Pretty Funny when the right Snark Bait is laid:
Haken: *pulling out a Royce bodypillow*
Axel: You could have picked something with a little more class.
Shrug of God: Particularly hilarious example: AdventFalls (who mostly writes Shoujo Ai) hadn't decided whether Rebecca was straight/gay/bi by the time he suddenly had to for Akebara's Distracting Looks feat. So he rolled dice for it.
And rightly so - if Nigo was heroic, taking on all three members of FangOreo in their strongest forms (except Haruka) and managing to completely kite their strategy until Kaoru stopped her personal timeflow would probably qualify as a Crowning Moment Of Awesome in its own right.
Fortunately, ever since Kenoko obtained her Mid-Season Upgrade, she hasn't really had to worry about that.
Couch/Kouta Tsukamoto: Meanwhile, from my standpoint, I'm the new guy. I'm liable to jump to conclusions early on both in and out of character because I -wasn't- there for all the sources of all this bitterness, I just see the aftereffects. So this character's story arc is more about someone who knows in his heart, but can't necessarily articulate, what being a Rider means, and in some cases is likely to know that what he sees isn't it. Thus resulting in more of an externally-driven story arc - reacting to the people around him who've become jaded for one reason or another, attempting to live up to what Kuuga's legacy once was and should be again, and hopefully providing some aid for others in a position to receive it.
City Noir: A cross between this and Cyberpunk with a Chance of Rain. Despite the city itself being lit up like a Dutch brothel, it's perpetually thunderstorming overhead, and Wyll can tell it's towards evening because the sky starts letting loose bolts of green lightning. Oh, and the city's name? Neon.
The detective agency takes on the Wyll/Aelita pairing name.
Wyll and Aelita being a devastatingly competent tagteam was brought up in KRV (and, in fact, was part of Wyll's plans before he wasPut on a Bus), and hinted at briefly in RAC, but here we get to see it at full force.
Wyll finds a clue that's in hex - a la the binary and hex messages in Musou Quest.
Private Detective: Wyll and Aelita, obviously. And the trope is played straight with a vengeance.
Private Eye Monologue: Found in the first episode and on the archive page, and implied to be the lead-in to each episode. Also used as a narrative device to allow Wyll and Aelita to do their own thing in different places while sharing screentime.
Even after a thorough polishing to remove large swaths of IC natter, the uTOHpia e-splat remains quite tropable as its proprietors take on the nuances of M&M2e along with several oddities from RAC, KRV, and even canon Kamen Rider.