Glad you enjoyed it :3 Actually, you missed 1 ending cos you were playing the director's cut version :P hehe. The O2A2 version has 3 endings, so you were right there, but the director's cut one has 4 endings. The one you didn't see is probably the shortest, least exciting one though, so you didn't really miss much, haha. I'll say what leads to it under a spoilers thingy below!
Anyways, cheers for playing and I hope your poor voice gets some quality recovery time x3 Also, I really appreciate you mentioning about rating itch games btw! Cos I feel like a lot of people probably still don't know you can do that since it's not super clear on the site, haha.
SPOILERS BELOW
The one you didn't get is the one that happens if you successfully click on the heart enough times :3