The solutions for challenges 1 and 2 are no longer available (I accidentally deleted them from Google Drive). I will retype them one of these days…gomen
Challenge 3 was originally lost as well but somehow recovered.
The solution is an imgur link of the character who ate Akari's precious pudding.
2012/12/19 - Solved by @TheBonkler Two in a row :D
Just for fun. No prize because I'll go broke giving away nendos :(
The solution is a link to the missing hairbun.
2012/12/13 - Solved by @TheBonkler
Note: If you've won a prize before you can't win another.
An 18 digit number is the status that leads to the answer, but to begin your quest you will need to start shorter.
Edit: Ignore https://waa.ai/status.php. It's not relevant here. All the information you need to start can be found on this page.
2012/12/12 - Solved by @acesofthesky
Because I am kind, loving, and a little bored, the first person to make it to the end will get an Akari nendoroid. Good luck!