Expy: Of sorts to Doraemon, as pointed by various references through the series. She comes from the future to prevent Sakura from turning out bad much like how Doraemon did for Nobita, but for twistedly nonsensical reasons.
Genki Girl: This girl is incredibly energetic even when the chips are down.
Girlish Pigtails: She sports a pair of these, which help add to her cute design.
Pervert Revenge Mode: An exaggerated example; Dokuro outright kills Sakura whenever he does anything perverted, only to bring him back to life later.
Tomboy and Girly Girl: Dokuro is an energetic and tomboyish angel with a Hair-Trigger Temper, while her younger sister Zakuro has a soft-spoken and polite personality.
Well-Intentioned Extremist: She's only acting in order to make sure that Sakura in the future doesn't develop the technology that will pause all development of women at age 12 and essentially lead to mass pedophilia, and she wants to do so without killing him forever, but she does so by constantly killing and resurrecting him so he's too busy to discover how to create the technology, and doesn't realize that this is a Fate Worse than Death.
Yandere: You bet your halo Dokuro's one of these. She interestingly exhibits qualities of a Tsundere as well. Dokuro's generally a "nice", "well-intentioned" girl, however she won't hesitate to become enraged and kill Sakura in two seconds if he manages to get on her bad side. And then she's back to being dere-dere again.
Accidental Pervert: Sakura almost never has any overt sexual thoughts when he provokes Dokuro's wrath. In fact, these moments are just about the only times he isn't having sexual thoughts.
And I Must Scream: His continuous fate is to be brutally murdered and resurrected by a murderous angel to prevent him from enacting mass pedophilia. It's mentioned in the novel that Sakura actually remains conscious whenever Dokuro splatters him.
Back from the Dead: Dokuro frequently resurrects Sakura shortly after she kills him.
Butt-Monkey: Everything is out to get this poor schmuck.
Death Seeker: Played for comedic effect. It is implied that one of the reasons why he always acts so Too Dumb to Live around Sabato by constantly offering to help her or falling for her seduction despite the fact that she is on a mission to actually kill him for good is that he wants her to succeed so he doesn't have to deal with Dokuro's constantly killing and resurrecting him.
The Dulcinea Effect: He's always willing to help Sabato, despite how often she's tried to kill him.
Future Me Scares Me: He was targeted because his future self would make women unable to age past 12 to facilitate pedophilia, and he's clearly horrified.
Major Injury Underreaction: Comes to act like this once being blown up with a club becomes a mundane occurence.
The Many Deaths of You: He gets offed by Dokuro in various different ways, only to be brought back to life seconds later.
Nice Guy: He grows fond of Dokuro despite how she treats him, and brings food to the homeless Sabato when she's not looking, since she's not a bad person either and he feels sorry about her having to be stuck in the past unless she could kill him.
Unlucky Everydude: One ought to have pity on Sakura. Not only is he saddled with a girly name, he's targeted by celestial forces, and he's costantly and painfully killed and revived ad nauseum.
Villain Protagonist: Played with. Sakura now is not a villain, but without Dokuro's interference, he will become a pedophile that freezes the physical development of women at 12 to enact his reprehensible desires.
Hair of Gold, Heart of Gold: Zigzagged. Despite her constant attempts to kill Sakura, she's shown to be a very kind and friendly girl when she's not trying to murder him.
Everyone Has Standards: When Sakura tells Shizuki about how he doesn't want Zakuro to take Dokuro back to the future, Shizuki quickly reminds him that Dokuro has done nothing but cause him pain and trouble since her arrival.
Nice Girl: The only person who is always on Sakura's side, believing him to be a good person.
