I am pretty sure that happens in every typical anime fighting ever...
Dragonball had it, every Superman story ever had it, in fact, long be Asura, there was... ORA ORA ORA and MUDA MUDA MUDA, or Kenshiro, which happens like every 5 chapters. Argument: almost all of them had blue vs red color blasting... then... let's start tearing through every Hong Kong weekly manhua ever... every time a significantly stronger enemy shows up, he will almost certainly start with fist greeting fist scene. Yeah, in blue and red aura (with dragons and tigers and monsters )
no seriously.
So is this one of those shows where if you don't know the "source material" you won't get any of the jokes? Because I don't know anything about Lovecraft or w/e but everyone is hyping this show up so I kinda want to try watching it. :<
I think the question is, why would you not read Lovecraft.
also, he has his own Wiki, and if he watched this today he would roll at how his monsters are being used. It has less to do about Lovecraft than cows have to do with milk. You have better luck reading the Kamen Rider and Type Moon wikis to get the jokes. But yeah, Rider jokes every 30 seconds.