Shout Out / Hatoful Boyfriend

• "Oko San used WING ATTACK! It's super effective!" And this is only the first of several such references when Oko San is involved.
  • Probably his best, however, is unleashed upon Sakuya on Oko's route if you side with him during an argument between the two: "GIGA...DRILL...BEEEEEEEEEAK!!" Sakuya doesn't have a prayer after that one.
• In addition, Yuuya says "Who the hell do you think I am?" in the BBL route, after Taking the Bullet for Sakuya.
  • For bonus points, as he's dying, Yuuya's last words are 'Later, buddy," again calling back to Kamina.
• Another Pokémon reference in Yuuya's route, followed immediately by a Toy Story one: "Blast off at the speed of light! To the maintenance office and beyond!"
• Brian the Pigeon won multiple Pulitzer Prizes.
• The Bad End if you don't go all the way with any romance has a very specific grim reaper screen!! It also has double exclamation marks!! Like all over the place!! And one of the inventory items is a Nintendo 3DS amongst other things!!
• "Nepotism, ho!"
• OreHato: My Little Nicobar Can't Be This Cute
• The heroine can suggest Night on the Galactic Railroad to Nageki, who replies that he's already read it, though he did like it. This tells you a lot about Nageki.
  • Chapters 3 and 4 of "Holiday Star" are also extended references to Night on the Galactic Railroad, with a remark from Nageki suggesting that it is the King's favourite book.
• Our heroine's in despair! Events that happen when she's late leaving school one day (in the full version) have left her in despair!
• In bright red text: I did not kill <player name>. This is true.
• If you choose to side with Ryouta in the cafeteria, your rage inspires Okosan to flee like a rabbit from a catapult.
• Alternately, siding with Okosan will get you calling him San of the Forest.
• The choice of wishes at Tanabata Festival (Take Over the World, rule the world from shadows, and become a famous artist) could be a shout-out to Adolf Hitler's biography.
• During one of the flashbacks in BBL route, we learn that Yuuya's stepfather killed Yuuya's biological father to have his mother. That totally doesn't remind us of anything...
  • Nor does his response...
• Shuu apparently sounds like Snufkin. Which is understandable, considering that he is voiced by Takehito Koyasu.
• The dialog between Shuu and Ryouta about Hiyoko's head in the box is very similar to the final reveal of Se7en.
• Ryouta's battle against Anghel bears a resemblance to a certain video game trilogy.
• How Kazuaki, Ryouta and the protagonist try to defeat Tohri is somewhat similar to the final battle in EarthBound (1994).
• Mister One appears to have access to Inception technology.
• Albert Alain Alkan, Sakuya's raven butler, seems very similar to a different hypercompetent butler with questionable motives and a mysterious past. Also, which other badass butler, whose name starts with "Al", do we know?
• Then there is the in universe anime series, Pretty Coore (with an installment called "Hatocatch Pretty Coore" getting a mention).
  • This! Is! PRETTY COORE!
• In Holiday Star, apparently Hiyoko and Nageki travel through dungeons deep and caverns old.
• Also in Holiday Star, we have "I Object!", and talk of finger pointing.
• Shuu will watch the festival fireworks, wishing that he could be so grossly incandescent.