Thank you! There's only 2 endings - a regular one and a "full" one, which, once you meet its requirements, you'll get a message telling you you've done everything. As for those last few digits - two numbers made of daisies will spawn in the east and west sides of town after you give Sapphire the daisy seeds and she tells you the hint. Let's just say the last 4 digits of the code are two numbers repeating. i.e. "3838" (except not 3 and 8).
Was actually able to figure them out by deducting, looking around, and guessing! Thank you so much for replying! The writing was so funny yet heartwarming, and the art like I said was adorable! I'm looking forward to your future creations so much, and wonderful job! :)