Affably Evil: Umbra's actually rather kind and childlike for a shinigami. He sets out to help another shinigami retrieve his notebook, seems to like kids and without Kiyomi's knowledge has continued keeping an eye on Erin, who it's implied he's in love with.
Sidoh is this too; he's timid, not very bright, a bit of a goofball, and seems just as worried about Midora dying for his mistake as he is about his own life.
All-Loving Hero: Erin, although whether she's this trope or a Love Freak is up for debate. She'll even take back a friend who tried helping her boyfriend kill her and give first aid to a burglar who tried to break into her apartment and she fought off with a baseball bat. In fact when she first learns about Mello her first thought is whether he can be saved. A few characters have commented on this, though not generally in a positive way: Misa in private wonders if this makes her a saint or an idiot, and Near tells Erin that she's "like a stuffed animal my granny would make."
Anti-Villain: Umbra. He's a shinigami who (mostly) functions on the usual Blue and Orange Morality of his species, but he volunteers to help Sidoh get his (and Midora's) notebook back when he doesn't really have much to gain by doing so (in fact it's revealed that Sidoh made him accidentally drop his notebook in the first place for Kiyomi to pick up), he seems to have a soft spot for kids and it's implied that he has feelings for Erin, who he's been watching over for the past two years.
Anywhere but Their Lips: Stephen and Erin have their first "kiss" consisting of Erin kissing her palm and using that hand to shake his before he drops her off. She was worried about her breath and generally didn't feel ready to kiss him on the lips yet. She leaves him "disappointed but not really surprised."
Later Erin averts this when she kisses Stephen on impulse, and ends up biting his lower lip in the process.
Matt tries to avoid kissing Misa directly on the lips during their Fake-Out Make-Out.
Ascended Fridge Horror: Erin stops to wonder whether Misa snapping and reverting back to her old ways might have eventually happened to Light too if L had followed her suggestion of destroying the notebooks in the first story.
Batman Gambit: Knowing that Near would notice Matt hanging around Misa, Mello has Matt get arrested by Near's task force so he can sneak a piece of the Death Note to his mole in Matt's cigarette. The mole Ill Rat proceeds to write down the names of the majority of the task force before eating the piece and shooting himself.
Later, Umbra exploits Sidoh's bad grasp at names by having him misspell Erin's name four times on a piece of the Death Note he'd kept stashed on him, thus giving her immunity to the Death Note; this could also count as a Gambit Roulette.
Betty and Veronica: Played with. It's gender-flipped with Stephen as Betty and L as Veronica for Erin's Archie, except that Veronica is long dead when the story begins. L's not physically there anymore and he and Stephen have never met, but he still complicates things for Erin.
Matt is the Betty and Misa the Veronica for Mello. Though Misa claims that she wouldn't mind "sharing him."
The story paints Misa's relationships with Light and Mello as to have some basis on this too.
Bitch in Sheep's Clothing: Kiyomi, full stop. She will among other things offer to watch her neighbor's new baby after she's just offed her own parents despite the fact that she hates her neighbor, because it's convenient for her.
It's suggested that Near has undergone a similar reaction since he found out about L's death around the same time, but he takes on L's title anyway and so far hasn't shown signs of being explicitly evil. Dickish and creepy, though? Definitely.
Byronic Hero: Mello as a villainous version—ruthless, brooding, passionate, rebellious, implied to be insecure and suffering from abandonment issues. He turns his back on L and his principles after he figures out the truth behind his death and believes that L deserted him and all the kids at Wammy's House. He makes it his goal to personally tear down the title.
Misa seems to be shaping up into one of these, as well.
Cain and Abel: While not blood-related, Mello is the Cain to Near's Abel, though they're both rather unpleasant boys to be around to say the least.
The Chains of Commanding: Aizawa, who takes Soichiro's place as Chief of the NPA when the latter is forced to retire due to suffering a stroke and a general decline in his health. Aizawa and his wife have since divorced and he is seen struggling with being there for his daughters while trying to get a grip on the new situation with the Death Notes.
Discussed during Erin's first encounter with Near, when she asks why the world even needs someone like L anyway.
Near: That's like asking why we need the police or doctors or leaders. The job has to be done by someone, no matter how much it sucks to do it. We've invested too much in L's legacy, and the world has grown too dependent on it, for us to simply abandon it now. Besides, I for one can't see myself doing anything else.
A flashback reveals that he has a Freudian Excuse: his parents, especially his father, weren't exactly kind or sincere people, and when he was in school he got a girl he was seeing at the time pregnant. Roger did the responsible thing and married her but kept wishing that they weren't having a baby and thinking about how he didn't feel ready to be a father. His wife ended up dying just after giving birth to their son, who turned out to be stillborn. He felt horribly guilty about the whole thing for a long time afterwards; in fact it's implied that he never completely got over it.
Hitoshi Demegawa, sepsis from a ruptured appendix. On September 4th at 1:30am he goes to a playground drunk and bets he can fit into an infant's swing for 9800 yen. He strips naked and manages to squeeze into the swing but cannot get back out. Twenty minutes later his appendix ruptures with pressure to his abdomen and he dies from septic shock. Before his death happens, he spends the rest of his time alive between today's date and September 4th giving back all of the money acquired from his "Kira's Kingdom" scam; he does not mention a word about this to the public.
Chiharu Takada, suicide by gas inhalation. On September 7th at 9:00pm she seals all of the windows and doors of her house, then turns on her oven and places her head inside. The house fills with gas and she dies from carbon monoxide poisoning.
Akio Takada, suicide by burning. On September 7th at 11:15pm he returns to his house to find his wife dead in the kitchen. Overcome by despair, he douses himself with kerosene and strikes a match. He not only sets himself on fire, but blows up his gas-filled house in the process. His and his wife's bodies are completely incinerated.
Daddy Had a Good Reason for Abandoning You: A non-blood relative example: Erin wants to tell Near that L hadn't meant to abandon him or Mello when he performed his Heroic Sacrifice in the first story, but she isn't sure if either of them would listen to an outsider who just found out herself that L even had successors in the first place, plus the fact that L did have a third option that Erin herself had come up with that wouldn't have required him to make said sacrifice, but he'd refused it because it would've meant letting Light get away with his crimes.
Darker and Edgier: Granted, the first story and the manga it's based on are by no means light-hearted, but in the notes opening the first chapter the author has stated that this fanfic "could even get darker than the first story, if you can believe it. It might. No promises." The fanfic was officially upgraded from Teen to Mature by Chapter 9.
Deadpan Snarker: Near, Matt, Mello, Stephen, Halle, Erin, Lumen...most of the major characters have their moments, really.
Dysfunctional Family: Kimiko reveals in chapter 10 that the Amane family was this before the murders.
Easily Forgiven: Zigzagged. Erin happily welcomes Misa back into her life despite what she did in the first story (none of which the latter remembers anyway), but lately Erin finds herself thinking back on it...
It's like ever since this thing with the new killings and L-imposter…Misa's not that person anymore. So why do I feel strange when she touches me?
Eviler than Thou: Kiyomi becomes more evil at a quicker rate than Light had even though she takes up using the notebook for similar reasons Light did, and actually manages to look worse than Mello. Interestingly she would be more inclined to believe she was Holier Than Thou. For instance she decides to off both her parents when she can't stand them anymore, compared to Light who is suggested to have only attempted to kill his father in the prequel because he felt forced to do so.
Face-Heel Turn: Mello pulls this when he figures out what happened to L and believes that L has abandoned him and everyone at the House.
Handicapped Badass: Soichiro, who has managed to regain enough of his walking ability to not need a wheelchair anymore and uses a cane. This doesn't keep his wife from insisting that he use the lift when taking the stairs, though.
Near: Honesty can get you killed, Ms. Blogger. Surely you could appreciate that at least a little.
Erin: But the lack of honesty will keep you going in circles.
Near: You don't say. Then what about your relationship to Amane? She doesn't remember killing anyone…but you do, don't you? You've never told her, have you? Isn't that dishonest? Would you call your relationship with her a perpetual circle?
Erin: What the—th-that's different! She doesn't need to know that. Your men and Halle need to know about Mello.
This turns out to be subverted; she's in cahoots with Mello.
Heroic BSOD: Erin suffers this initially upon finding out that someone out there is "impersonating" L. And later, when Misa betrays her and runs off with Mello with most of Near's task force dead in their wake.
Villainous BSOD: Matt seems to undergo this after he escapes from jail after Ill Ratt has killed himself and most of the agents on Near's task force using a piece of the Death Note that Matt had smuggled to him. He holes himself up in his room and smokes all his cigarettes without stopping. Lumen and Misa do not help things.
Honest Advisor: Armonia Justin, who tells Midora almost immediately after Sidoh begs him not to that Sidoh lost her notebook and had it stolen by Lumen, either out of spite or because as the text says, he's "an advisor, not a secret-keeper."
Hot-Blooded: Erin on the heroes' side. On the bad guys' side, Mello.
Hypocrite: Kiyomi starts as the victim of Demegawa's frequent sexual harassment. Yet when she takes in Teru as her accomplice she has no qualms about exploiting her power over him to make advances on him.
Hypocritical Humor: A rather dark example: a coked-up Misa accuses Erin of acting like "a jealous girlfriend" upon catching her with Matt. Earlier she calls her brother's ex-girlfriend a slut when she hears from Erin about her infidelity; it's later revealed that she herself cheated on Hideki with Mello.
Ill Girl: Kimiko is an unusual variant: she's older than Misa, a recovered alcoholic and legally blind with a limp after getting in an accident when she was driving under the influence several years before. There aren't many jobs she can do anymore so Misa continues advancing her career at least in part to support her sister.
Important Haircut: It's noted that Aizawa has shaved down his afro and began sporting facial hair since taking Soichiro's job and divorcing Eriko.
Just a Kid: Erin's reaction when she meets Near for the first time and learns about Mello. Played briefly for laughs but mostly for drama. And it seems that she's still shaken by the fact that Kira and L were practically kids themselves.
Karma Houdini: Downplayed for Ryuk; it is revealed in chapter 9 that he is currently under the shinigami version of house arrest, but he gets to keep his notebook and keep killing for lifespan, and can enter the human world only if he drops his own notebook there. Nope, no room for Loophole Abuse here...
Deconstructed for Misa.
Kind Hearted Cat Lover: Erin, who has an adopted cat of her own and writes articles for animals in need of adoption.
Meaningful Name: Lumen is a word used to describe a passage or cavity, or the SI unit of luminous flux; derived from Latin, it means "aperture" or "light."
Umbra: "shadow" or "the darkest part."
Mercy Kill: Mello for all of his ruthlessness seems to believe in this for certain cases. He uses his Death Note to kill the mother of two of his mooks (one of whom was the burglar who Erin encountered earlier), who the mafia had had killed earlier. The mother was in a nursing home with dementia.
A Million Is a Statistic: Pondered over by Erin, who wonders whether everyone has this mindset at some level, including herself.
Moral Myopia: Erin wonders whether Misa suffers from this in regards to Kira. She became a supporter after he killed the burglar who murdered her parents but stopped supporting him because she believes the "official story" he killed her boyfriend Light.
Would Misa still admire Kira as a vigilante superhero if Light hadn't died (even if the two were one and the same)? Just as her admiration for him began after he'd killed the man who'd slaughtered her parents, would it be just as strong as long as he went after other people besides those she cared about?
Naïve Everygirl: Misa accuses Erin of still being this when Erin catches her in a compromising position with Matt and a box of cocaine.
Not So Different: Lumen fishes for a human like Light Yagami and gets Mello. Lampshaded by Erin and indirectly by Near (or so Mello infers by the TV broadcast Near airs).
Not What It Looks Like: When Erin comes back from her all-night meeting with Near, Misa picks on her about it and suggests that she left the party with Stephen and spent the night with him. Which is true, if only literally so. Erin tells her that he did leave with him, but that they "didn't do anything." At least not anything of the nature of what Misa was thinking.
OC Stand In: Lumen is the unnamed shinigami◊ who talked to Ryuk in the first Death Note Relight special. In this fanfic he is given a name and becomes one of the chief antagonists.
Offscreen Breakup: Misa and Hideki Ryuga (the pop star) hooked up off-screen during the Time Skip and likewise when this is revealed, they've already broken up. In fact, it's mentioned that Misa has dated a number of men since Light's death, but none of those relationships have lasted.
Parental Substitute: Just as Watari was this to L, flashbacks reveal that he had one too, in an old black woman who took on raising him after his father disappeared (he made him and his mother leave him behind in Europe in the wake of WWII) and his mother died three years afterwards. It's suggested that she taught him how to use guns and encouraged his talents as a mechanic and inventor.
It's also suggested that before Mello came to Wammy's House, he had a Parental Substitute in a priest at a monastery, Brother Ivan. He's the one who gave him his rosary. It's mentioned that Mello tried to seek him out after he left Wammy's, only to find out that he'd already died from complications with Huntington's; Mello hadn't even known that Ivan was sick until he learned about his death. Thinking about him compels him to use the Death Note to kill the ailing mother of two mooks who the mafia had had killed prior.
Pragmatic Villainy: As Lumen notes: "All that kept (Mello) from slaughtering everyone in this room right here and now was plain and simple pragmatism."
Precocious Crush: It's mentioned that Mello worshipped L so much as a kid that Matt would tease him by suggesting that Mello had a crush on him. Whether he actually did have a crush on L is unconfirmed.
The Resenter: Mello towards Near. He completely loses it when he finds out the truth behind L's death and readily uses a Death Note for his own ends when he finds one, all to bring down Near and the title of L in general.
Right Through the Wall: Matt hears Mello and Misa have sex from under the door to Mello's room; it's implied that this is a frequent occurrence. Played for drama rather than laughs.
Satellite Character: Lampshaded and deconstructed with Matt; he's implied to be severely codependent on Mello and goes along even though he doesn't like what he's doing.
Save the Villain: Attempted as in the prequel, but gradually deconstructed as the story goes on. "People like her...can't change even if they wanted to."
Inverted for Erin towards Misa. While she hopes that one day Misa can find a good man to settle down with she's very protective of her and is unafraid to tell men to back off. Then again, given Misa's history and her penchant for attracting jerks (or worse), this may be understandable.
Sleeps with Everyone but You: As far as Matt's concerned, he's the only person that Mello hasn't bumped uglies with for whatever reason; he accepts that as a sign that Mello cares for him too much to do so.
Stalking Is Love: Defied. When Misa suggests that Steve came to LA because he couldn't stand to be away from Erin (which isn't true, he's there for a completely different reason), Erin is a bit creeped out at the idea. Later, Umbra starts contacting her via texting and she's even more creeped out about that.
Stepford Smiler: Kiyomi and Misa. Erin has a few shades of this herself regarding her lingering grief over the events of the first story, but this being Erin, it makes itself evident sure enough.
Stepford Snarker: Erin has grown out of this for the most part, but she comes to realize that Near may be this himself.
Stockholm Syndrome: Lampshaded by Near when he finds out that Erin was involved in the first case and ponders why she's so quick to snap at him for passing himself as L.
Lima Syndrome: Near's theory as to why L never mentioned her in his report. Either way, he sounds disdainful of the whole idea.
Super OCD: Halle is implied to have OCD that manifests itself in frequent bathing/showering, and she takes medication for it.
Switching P.O.V.: In the first story Erin provided the primary POV as the narrator. In here the author has switched to third-person and multiple perspectives from different characters are explored within each chapter.
Teen Genius: Mello, Matt and Near, and their predecessor L.
Teens Are Monsters: Again, Mello and Near. Mello goes from being a schoolyard bully to basically the head of the Mafia armed with a Death Note. Near lacks Mello's temper but is nevertheless noted to be a younger and "darker, colder, angrier" version of L.
Teeth-Clenched Teamwork: Erin, the Japanese and American task forces and Near. They're only working together because they have to, or so is said by numerous characters on all sides.
The Teetotaler: Kimiko. Justified as she is an ex-alcoholic and is committed to turning her life back around. For Misa's house party she puts on the stipulation that everyone bring their own alcohol and is mentioned to have kicked someone out for bringing vodka.
Erin mentions that she doesn't drink and is shown drinking soda at the party.
Tender Tears: Erin is still prone to these as in the first story.
Threesome Subtext: Matt/Mello/Misa. Matt tries to defy it by blowing Misa off when he believes she wants to upgrade things from subtext.
Took a Level in Badass: Downplayed for Erin. She still cries and gets emotional easily, but she beats off a burglar with a Louisville slugger and isn't afraid to tell Near what for.
Umbra, initially uncomfortable with the idea of being in the human world, takes up an insatiable appetite in cake and other sweets.
Ryuk still likes his apples.
Tsundere: Erin. She vacillated between Types A and B in the first story but at present fits more firmly in Type B. Lampshaded by Roger:
"Enjoy your Happy Meal™ and make sure L gets his, too." She handed him the other box before trotting out into the den where the rest of the agents worked. "Remember, no toy until after he eats. That kid's way too skinny."
Roger couldn't help but shake his head as he went to deliver the food and her message to their recipient. Just the other day this same girl gave Near a noogie for being rude to Deputy Director Aizawa. This was the sort of behavior he'd expect to see in children and teenagers who couldn't decide if they liked you or not, or whether to act on it if they did.
"Well Done, Son" Guy: Mello towards L, and gender-flipped with Kiyomi. Deconstructed for both of them: the former goes to the dark side after his idol dies and he thinks that said idol abandoned him; the latter who becomes mad with powerdecides that she doesn't need her mother after all and offs both her and her father with her Death Note.
Wham Line: When Erin goes to jail to see the burglar who'd tried to rob her and attacked her cat in chapter 2, she hears this from an officer at the front desk:
"He's dead. Last night. A heart attack, from what I understand. I'm so sorry."
Another one from chapter 9:
Misa(to Matt): If it helps, pretend that I'm Mello.
What Is This Feeling?: Umbra has been watching Erin since the end of the first story, though he's unsure as to why he feels so compelled to do so.
What the Hell, Hero?: Erin still has a fondness for dishing out this trope. So far she pulls it on Stephen when she thinks he's trying to steal Misa's things at the party (before he and Halle are forced to tell her the truth, at which point she becomes even more upset), and on Near for being, well, Near.
Who Wants to Live Forever?: Umbra asks what the point is to living forever if their lives as shinigami are so boring. Lumen begs to differ, responding that they can just as well make their own excitement since they've got all the time to do whatever they please. It's also implied that most shinigami feel this way at some level, but at the same time they keep killing humans for their lifespan because they're still afraid of what may happen if they don't...
Who's Laughing Now?: Kiyomi. Despite being "Miss To-Oh" and one of the top students in college, she has a dead-end job at Sakura TV and her parents won't speak to her because of it, and she gets pushed around by Nishiyama and sexually harassed by Demegawa. Her only close friend and confidante is Mikami, who it's implied that she's attracted to. That all changes when she finds Umbra's notebook in her apartment...
Wounded Gazelle Gambit: Misa purposefully induces a cocaine overdose to distract Erin while Matt is arrested. When she recovers, she runs away from the hospital.