Disappeared

Persona 4, Recycled in Space, with an even more screwed up cast engaged in Teeth-Clenched Teamwork. They fight shadows.

For a broader description, Disappeared! is a Role Playing Game that is played on InsaneJournal. It takes the basic idea behind Persona 4 and makes it much bigger.

It has a wiki at: Sweetcouch.

Tropes used in Disappeared include:

Adults Are Useless - Not a single persona-user is older than 18. Guess who are the sole group actually doing anything about the murders and disappearances?
Arc Words - "Millennium City", "Disappear", "Paradise".
Angrish - Maeko has a tendency to devolve into saying "stupid stupid stupid" and variations of such when angered sufficiently.
Beach Episode - It ended in the team fighting Toshimi's Nietzsche Wannabe shadow at the top of a spinning lighthouse.
Big Ball of Violence - All Out Attack.
Big Damn Heroes - Featured in practically every dungeon.
Bland-Name Product - Much more extensive than in Persona 4, with everything from 4chan to the Nippon Ham Fighters, and including TV Tropes itself, getting this treatment.
Breaking the Fellowship - The team's meltdown after Kiriko's dungeon, which nearly gets them killed when Maeko's shadow sells them out to the murderous angels.
Breather Episode - Essentially everything that isn't the overarching plot, an investigation, or a dungeon.
Broken Bridge - The lighthouse staircase in Toshimi's dungeon.
Butt Monkey - Keiichi.
Butterfly of Death and Rebirth - Philemon. He appears to the party after the first Curb Stomp Battle against the angels, granting them the Butterfly Room.
Cargo Ship - Kiriko x Giant bag of money, anyone? Also, Couch x Bonsai, in the anonymous fic meme.
Character Blog - A large part of the game takes place posted on these.
Character Development - Integral to the plot of the game is the maturation of the teenage cast.
Chekhov's Gun - Hikaru's occult shop, and the fact that his items closely resemble the same items obtained from shadows in Paradise.
Clap Your Hands If You Believe - Paradise is entirely formed from people's thoughts.
Class Trip/Hot Springs Episode - Just like in Persona 3, but it went much better for the boys in this cast.
Collective Groan - The typical response to Misaki's Friendship Speeches.
Contemplate Our Navels - Introspection and self-links are this.
Cultural Posturing - Half of what Kouchisei has to say is about the obvious superiority of Japan.
Destination Defenestration - Done in reverse to Kozue by Reizo in an attempt to enter a locked dorm room.
Digging Yourself Deeper - Every attempt Toru makes at assuring the team of his HeterosexualToday heterosexuality.
Dream World - Paradise.
Dramatic Wind - Featured in Toshimi's dungeon. It's actually important to the plot.
Dumbass Has a Point - The easiest way to sum up Kiriko's interactions with Keiichi (when they're positive.)
Dysfunction Junction
Elevator School
Ensemble Darkhorse - Reizo and Shirou. Maybe even Toru to a certain degree.
Evil Counterpart
Eyes of Gold - The Shadow versions of the characters.
Fan Disservice - Mara -chan.
Fan Nickname - "OM Gels", for the angels, S![name] for characters' shadows.
Fisher Kingdom - The characters' respective dungeons.
- Video Games - Toru's dungeon played with many of these genres.
- Fairy Tale Motifs - Maeko.
- Comic Books, Super Team - Tom.
- Camp Mood Whiplash - Seiko.
- High School Dance meets Love Hotels - Kozue.
- Survival Horror - Reizo.
- Dystopia - Keiichi.
- Wedding Day - With bombs. Kiriko
Flash Back - Heavily featured in many dungeons.
Fountain of Memes - Reizo and #4.
Four Is Death - There are four angels. They appear in the technical fourth dungeon. In one more humorous example, Kai repeatedly fails his Zio spells by rolling fours in combat.
Giant Space Flea From Nowhere - The initial arrival of the angels appeared to be this.
GIRL - Kiriko prefers to play as male characters in MMORPGs. So does #4.
Hands-Off Parenting - Except for where they actively feature in the individual plotlines of characters, most parents are conspicuously absent. Toru's are extremely glaring examples.
Have I Mentioned I Am Heterosexual Today? - THIS IS A NO-BUTTFUCK ZONE!
Heel Face Turn - Seiji betrays the other angels in order to assist the team. It doesn't end well for him.
High School - Like all Persona Games.
Ho Yay - Maeko and Misaki, Toru and practically everyone, Renju and Masami (kinda), Renju and Kozue, Kai and Kouki...
Improbable Weapon User - Kozue uses a tennis racquet. Joke weapons also tend to fall into this category.
Info Dump - Seiji delivers one after his Heel Face Turn.
Intentional Engrish for Funny- The most memorable segment of Maeko's dungeon.
Jigsaw Puzzle Plot - Comes with the fragmented nature of the storytelling.
Laser-Guided Amnesia - If a character rejects their persona and powers, the rest of the team automatically forgets about their involvement in Paradise.
Light Is Not Good - While Shadows are common enemies, the real villains of this story are a group of angels.
Kill It with Fire - Attempted upon the Couch.
Killed Off for Real - Mr. Aomori, Seiji
Madness Mantra - peelpeelpeel. Also, S!Renju's Buddhist chants.
Malicious Slander - Slung left and right. This is High School, after all.
Mega Corp - Naka Co.
Masquerade - Both persona-users and angels alike.
Memetic Mutation - Several noteworthy examples:
- The sweet couch.
- Reizo's junk.
- Reizo's slim hips.
- This is a no buttfuck zone!
- Danger at the rear!
- Winged asses.
- The Kondo Hole and Kondo Sack
- Peelpeelpeel
- ALL RIGHT, I'M PUMPED NOW!
- "possibly homosexual, must investigate further"
- Bromonade
- Punch him, puncher!
- "Kanaye's dungeon is definitely next!"
- Kiriko x Giant Bag of Money OTP
Mirror Boss - Shadow Seiko, literally.
Never Speak Ill of the Dead - Invoked with the deaths of Shingo, Kei, Seiji, and Mr. Aomori.
New Transfer Student - Nayuki, until he was sent to the moon.
Next Sunday A.D. - The game is set in 2013.
Nightmare Fuel - Many of the dungeons and bosses, but most obviously Renju's and Reizo's.
Nightmare Fuel Station Attendant - Seiji and Kouki.
Ojou - There exists an Ojou Club made up of Masami, Kiriko, Kajiko, Tamiko, and Noriko. They commit crime.
One Noriko Limit - There were originally three characters named Noriko. Since then, only one has persisted. Another one had her name retconned to Natsuko.
One-Winged Angel - The boss shadow forms of characters. Some more than others...
Outlaw Couple - Kiriko and Reizo.
Parental Abandonment - Most of the characters have issues.
Player Punch - Seiji's death, the fact that Sato Kei was the original persona-user.
Posthumous Character - Sato Kei and Shingo Furukawa.
Precision F-Strike - Masami said "fucking?" She's definitely gone shadow.
Prolonged Prologue - The predungeon investigations are often quite lengthy.
Purple Prose - Kazuya's horrible love poems.
Put on a Bus - Shiori, Kanaye, Emi, Yuuto, and Kazuya (to name the more blatant examples...)
Ragtag Bunch of Misfits - The Anti-Bullying Club/investigation team.
Reading the Stage Directions Out Loud - Yoshimi does this while attempting to apologize for her intrusion on Toru and Kazuya's first date.
"The Reason You Suck" Speech - Commonly delivered by shadows before being rejected.
Retcon - Ginjiro never invaded the dorms. Nobody ever called Toshimi scary. Reizo never commented on Yoshimi's Bland Name Kingdom Hearts panties because she doesn't own any.
Room Full of Crazy - Kiriko's dorm room after she goes shadow.
School Festival - It cannot end well.
Screw You Angels
Seeking Sanctuary - The Butterfly Room cannot be entered by malicious shadows, or so it seems.
Seinfeldian Conversation - The Gossipers, full-stop.
Sempai-Kohai - Used heavily in character interactions.
Shirtless Scene - Reizo gets several, in order to... erm... highlight his yakuza tattoos.
Shut UP, Hannibal - Happens during the boss battle with Hikaru. Toru and Tom don't feel like dealing with a Well-Intentioned Extremist, it seems.
Slice of Life - The non-plot character threads, which deal with club activities, video games, dates, chance encounters, and other mundane interactions meant to flesh out the characters.
Snooping Little Kid - Emi and Kozue, who attempt to spy on the Anti-Bullying Club and end up getting dragged in to being persona-users when they're caught.
So Bad It's Good - The Christmas story, which was a bad Final Fantasy VII fanfiction with the names replaced.
Subcultures in Japan - In spades.
Summon Magic - The personae.
Talking Is a Free Action - Most obviously during dungeons and boss fights.
Tanabata - Heralds Misaki's disappearance into Paradise.
Tarot Motifs - One for each major player character.
Team Pet - Tom's puppy Max.
Ten-Minute Retirement - Yoshimi and Renju both undergo them when they lose their personae.
True Companions - Reluctantly.
There Are No Therapists - Ever. If there were, the cast likely wouldn't have to fight their shadows!
Think About Your Persona - What gets the team (other than Toshimi and Kanaye out of the void in Renju's dungeon.
Throw It In - The couch/Butterfly Room were never originally in the plan for the game, but then the couch dodged fate and set the circumstances leading up to its home in motion.
Too Dumb to Live - Anybody who picks a fight with Reizo.
Touched by Vorlons - Being thrown into Paradise seems to have activated the characters as persona-users.
Translation Convention - The game is supposedly set in Japan, and is thus technically in Japanese, but written out in English.
Troll Bridge - The kendo teammates' questions in Masami's dungeon.
Urban Fantasy - As per the game's basis.
Useless Useful Spell - Status skills and Light/Dark spells.
Utopia Justifies the Means - The angels and their Millennium City.
The Verse - Set in the same continuity/universe as Persona3 and Persona4. And apparently Hellsing, according to Word of God.
Villainous Crossdresser - Noriko Kojima.
Violence Really Is the Answer - A belated discovery in Toshimi's dungeon, when confronting the Gene/Ginji shadow.
Wake Up, Go to School, Save the World
The World Is Always Doomed - Only a few years after Nyx and Izanami, a group of young are stuck fighting the angels and their impending Millenium City! Persona-users never catch a break, do they?
Winged Humanoid - The angels.
World of Cardboard Speech - Features heavily in Character Development at the end of/after dungeons.
Why Did It Have To Be Cars? - In Tom's dungeon, Toshimi turns out to be utterly terrified of the cars attacking the party. Turns out, her cousin was killed in a car accident right before her eyes.
You Can't Thwart Stage One - Every attempt at preventing the angels from throwing characters in Paradise is doomed to fail. As is being a character with The Potential and not getting thrown in by the team.