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Manga / Yuugai Shitei Doukyuusei

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Miyako Yatsuhashi is a straight-laced Class Rep while the girl who sits next to her, Reika Miyakonojou, is an awkward pervert with No Social Skills who doesn't wear panties to school. Will Miyako be able to reform Reika into a normal high school girl?

Yuugai Shitei Doukyuusei, literally "Harmful Designated Classmate", is an ecchi comedy manga by Kuroha, published from 2017 to 2019 in Jump SQ.

Harmful Designated Tropes:

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  • Brother–Sister Incest: After learning that Miyako has a little brother, Reika immediately assumes this trope is in effect. Of course, she's wrong.
  • Chewbacca Defense: Reika is adept at countering Miyako's tirades against her "immorality".
    The school regulations only mandate that "you must wear the assigned uniform on school grounds." And panties are not part of the uniform, are they?
  • Compensated Dating: Reika considers doing this, but Miyako is able to talk her out of it. However, she saves up for an expensive wallet so people will think she got the money from prostitution.
  • A Date with Rosie Palms: One of Miyaknojou's favorite pastimes, even during school.
  • Expospeak Gag: In this case, used for innuendo. Disappointed that Miyako didn't use the electric toothbrush she got her for A Date with Rosie Palms, Reika muses on how "Miyako is taking my present, turning on its vibration, inserting it into one of her mucous membranes, and shoving it around until she's good and satisfied."
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  • Friendless Background / I Just Want to Have Friends: Miyako is the first friend Reika has ever had.
  • Girlish Pigtails: Miyako always wears her hair in braids, and is more innocent than Reika.
  • Going Commando: Reika's Establishing Character Moment.
  • Headbutt Thermometer: When Miyako is sick, Reika checks her temperature this way.
  • Homoerotic Subtext: Reika is a shameless flirt with Miyako, and Miyako more than once comments on how attractive she finds Reika.
  • Hypocritical Humor: After begging Miyako into letting her touch her boobs, Reika chides her for not being able to turn down people asking to grope her, as if Reika herself doesn't fantasize about that.
  • Idiosyncratic Episode Naming: Every chapter is titled "Miyakonojou-san [does x]".
  • Indirect Kiss: After borrowing Miyako's panties, Reika compares it to an "indirect clam kiss". Later on, she claims that swimming in a public pool is an "indirect orgy".
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  • Joshikousei: The girls wear sailor uniforms at school.
  • Knights and Knaves: In one of the Volume 2 bonus chapters, Reika proposes a novel approach — jerk off the guard and ask them if it feels good or not.
  • Mascot: The baby seal who appears in the background sometimes.
  • Once an Episode: Each chapter usually ends with Miyako reacting with a shocked face to something Reika said.
  • Only Friend: Yatsuhashi is Miyakonojou's only friend.
  • Pose of Supplication: Miyakonojou does a dogeza to beg Yatsuhashi to let her touch her boobs.
  • School Sport Uniform: Reika is the only girl who wears bloomers in gym class, claiming it's a form of "cultural preservation" (but she really wears them because they're associated with lewdness).
  • Self-Deprecation: Reika tends to put herself down a lot. For example, when she forgot to get Miyako a birthday present, she ranked herself below gum stuck on the bottom of Miyako's shoe.
  • Shameless Fanservice Girl: Reika's Establishing Character Moment is her Going Commando to school (and looking up Miyako's skirt).
  • Shout-Out:
    • In Chapter 20: After going on A Date with Rosie Palms all night with her vibrator, Miyakonojou sits in the same pose as Joe at the end of Tomorrow's Joe, and says she'd become... Miyako no Joe.
    • In some bonus content, the author says, "The simplest method to make a good manga is to take a good manga, and just rip it off. In other words, Jojo." Next to it is a closeup from a previous chapter of a bottle of hand cream called Hand Creamson.
  • Sick Episode: In Chapter 26, Miyako gets a cold and Reika comes to visit her.
  • Spoof Aesop: In Chapter 21, after getting a vibrator stuck inside her, Reika muses that "for vibrators and online games alike, a stable connection is most important". Miyako thinks to herself how dumb a moral that is.
  • Standing in the Hall: In the title page for Chapter 23, Reika is shown standing with buckets in her hands and wearing a sign saying "I touched myself in school".
  • Tareme Eyes: Good girl Miyako has these, in contrast to Reika's Tsurime Eyes.
  • The Tease: Miyakonoujou, all the time.
  • Thinks Like a Romance Novel: Or in Reika's case, a porn movie. She was disappointed when a talent scout turned out to be legitimate and not a Model Scam.
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