Nice pics, but...
*** Much needed Spoilers! ***
Please remember that your player audience at large will not necessarily follow the same fandoms as you do. "Common" knowledge should be stuff that can be found in 40 year old textbooks of the language of your game.
If you set up a scavenger hunt across the internet, you should accept as answers what you find in the common search sites (such as IMDB, Wikapedia AND the show Wikia for the voice actress of Mandy & Frankie. _ALL_ legal variations of her name. Even with no strange spacings around the hyphen.)
Text-input clues should accept multiple variants of the names, accept lower or uppercase, spacing errors, and long or short versions of names. Any modern programming language has string treatment routines designed to make this work simple, as this problem was common and solved back in the 1980s.
The clue to puzzle connection is really not obvious, in game. It's a bit like writing the number to a safe's combination on a container on a train passing outside a window in another room... if the number was written in Cantonese. you need visual clues in proximity to both the clue scrap and the locked box to l9ink them. Or logic. Logic would be nice.
BTW, that's a jibe at scribbling a clue in Japanese script and expecting us to get the English off of that, as common English language users will not have the keyboard and character sets installed to type in かわいい, or even recognize the variant ways the characters could be drawn... let alone get the actual password from the online dictionaries that translate it as Cute, Tiny, Sweet or Cuddly.
So, nice decor, but not really much of a game. I had fun traipsing through the comments & web sites to figure out the game & write this review, though, but that's not what a casual game experience should be. :-(