Shout Out / The Crossroad

• In the earlier parts, the subject of Gappy Stus were brought up as a direct reference to Diamond in the Rough (Touhou). In fact, it features shout outs galore to it, from the flying on Marisa's broom scene, to her asking for payment to help the hero, to Nitori providing the weapon and spellcards, heck, Yukari later gives Makoto a book detailing the fates of several other Gappies, and Brolli Diamondback could be one of them...
• Marisa has Samson's Hairbrush in her room.
  • In the Sorror Sepulti fight, Susanne complains that being crushed by the stop sign hurts like the dickens.
• The guards in part 9 started spouting memes in one entire panel.
• From the same part, Guard Rushiru takes a page out of Panty & Stocking with Garterbelt's book and tells Marisa to REPENT, MOTHERFU--!
• Sachiko is singing niki's WAVE at the beginning of Part 10.
• There is a picture of Ecolo in the lab scene.
• In the Library scene, Marisa repeats her 'Two chances' line from Touhou Eiyashou ~ Imperishable Night.
• As a nice Continuity Nod to Asylum of Souls, an earlier series by Kigurou-Enkou, Misaka calls Marisa a Dumb Stupid Witch.
• Misaka was reading Yandere 101: How to Deal with a Yandere.
• Used in the earlier parts are the Anti Magilink Fields (A M Fs) from Lyrical Nanoha
• "THIS! IS! KAPPA VALLEY!"
• Panel 16 of Part 16 has the dialogue between Joe, Makoto and Marisa almost directly lifted from Peasant's Quest.
  • The use of the word Crudcrap is frequented.
  • Also, "Then I'll gut you and rip your entrails out with my hand..."
  • Marisa escapes while yelling PREEEOW!
  • Joe was holding Onion Bubs during the fight between Zero and Baal Michey in Part 66.
  • "WHAT THE BAH-- WHAT?!"
  • "BOOGLY WOOGLY, I'll scare your dad!"
• Makoto's weapon and fighting style is loosely based off Adam's from RWBY, which is in turn a reference to Ga-Rei -Zero-. Part 52 even has Makoto mimicking Adam from the Black trailer.
  • The Serra Angel Paul summons in the Training Montage also mimics Weiss' fighting stance
• Alyss facebooks herself with a written adaptation of Analogue: A Hate Story.
• Sachiko's library book reads It's Sad-venture time!
• Rein, Laurencin and Celeste are walking Shout-Outs to Sound Horizon , and with good reason...
  • Elefseus is also mentioned briefly in Part 55 as a Call-Back to a short story done before
• Emma herself is a Shout-Out to Ace Combat 3: Electrosphere's SARF route
• Kurisu and Meiling's Noodle Incident talk references the Nian.
• Patchouli still keeps the Ratcatcher in an attempt to ward off Marisa.
  • Tsukiyo and Tsumami from the same series also appear alongside Kotohime in the Human Village.
• Celeste always seems to be reading a Bible verse when she appears. The first time we see her, it's Psalms 20:7. The second time, Romans 3:23.
  • Alyss herself is seen reading Acts 15:37-39 in a later scene.
• Three words: Tea Deprived Reimu.
• In Makoto's first heroism tour of the village, he stops a thief with a HOLD IT!
• While Sanae is disappointed by the new line-up of Winter Season animes, Ni tries to cheer her up by telling her that one of giants was coming soon as well.
  • The Art Shift Ride of the Valkyrie picture in Part 86 is also a reference to Attack on Titan, episode 5 specifically where Eren's team charges towards the battlefield and subsequently gets wiped out
• "Stealin' your Precious Apples, cuz I'm Nazrin!"
  • Nazrin is seen later at the Myouren Temple eating an apple.
• Laurencin, upon his introduction, quotes the My Nameis Inigo Montoya line word for word, save for his own personal modifications.
• "POWER OVERWHELMING!"
• Komachi approaches a Dead Goldfish Stand like the ones described in Symposium of Post Mysticism. Laurencin also gives The Gensokyo Chronicle, the in-canon version of Perfect Memento, to Makoto.
• The Tasty Tonic that the Trolling Shopkeeper gives to Laurencin is a healing item from Paper Mario and Paper Mario: The Thousand-Year Door. It indeed is called a Sour Tonic in the German version.
  • Speaking of Paper Mario, Edward has a Professor Frankly moment in Part 67.
  Edward: ...well drat. I SAID THAT OUT LOUD! WHAT IS WRONG WITH ME?!
  • "I'm sorry...that you're so picky."
• Susumu gets a Wrench to the Head by a holographic Nitori
  • Speaking of the holograms, they are a direct reference to the Energon clones Zeta-Prime uses in Transformers: War for Cybertron.
• "A-BLOOGY-WOOGY-WOO!"
• BAAL MICHEY. An explosive-loving terrorist who yells constantly and demands more explosives to be added, no matter the cost. Reminds you of anybody?
  • "DAHAHAHAHAHAHAHAHA! FINALLY! I've been trying to catch you guys ALL DAY!"
  • "ONE SHALL STAND! ONE SHALL FALL!"
• Zero's own hammer is out of Warhammer 40,000
• Patchouli screaming "MY LIBRARY! MY LIBRARY! MY LIBRARY! MY LIBRARY! MY LIBRARY! MY LIBRARY! MY LIBRARRRRRRY!. She must have taken shouting lessons from Yukiko and her Tofu.
• Gundoc in Part 64 yells "I am fully charged!"
  • "FOR SCIENCE!"
• The Champions of Magic took Makoto and Alyss to Astral Arena in Kolbahan, a plane from Planechase 2012 Edition.
  • Paul's Team is more or less based on Magic: The Gathering's powers applied to Touhou.
• "NOW I'LL SHOW YOU!"
• Joe mentions surviving in Gensokyo with his skills and a Gravity Gun
• As Cirno finishes regenerating in Part 172, she's heard reciting part of Cave Johnson's "lemons" rant from Portal 2, part of which is backwards.