There's one in the rocky beach area and one in the mushroom area! You can technically get 2-3 endings on one save file, the other ending requires you to make a different choice halfway through the game in the gem cave region. It changes a few cutscenes in the second half of the game but it's up to the players whether or not they feel it's worth the investment!
It's not supposed to I was just saying that if you want to get all the endings that's where the choice that determines your ending is decided. The game can be sped through very quickly for those looking to get to the ending although it's only a few different cutscenes there's no exclusive H-Scenes or anything unlocked by viewing all the endings