one main ending, there's two paths/some minor variation on the way there [spoilers in base64]: YmFzZWQgb24gaG93IG11Y2ggeW91IGludGVyamVjdCBhbmQgdGFsaywgYXMgd2VsbCBhcyBpZiB5b3UgYWx3YXlzIHRlbGwgdGhlIHRydXRoIG9yIGxpZQ== if you're in a completionist mood
indeed: https://base64.guru/converter/decode/ascii
it really is, honestly
oh yeah i did see mostly one i think when i lied and went silent most of the second time round. only one i really remember that was significant was (base64 since that's what you used. i do suggest rot13 since its site is p easy to use and iirc isn't uncommon for VN spoilers. or at least, it used to be used a lot when higurashi and umineko were a lot more popular
anyway the main differences i recall in my second run (lies, silence) vs my first (truth, interjects) is (base64)
MS4gQ29yaW4gYW5kIEFsbGV0b24gc3dhcCBwbGFjZXMgYXMgdGhlIGluanVyZWQgcGVyc29uIGluIHRoZSBzZWNvbmQgYmF0dGxlLCBkZXBlbmRpbmcgb24geW91ciB0cnV0aCwgbGllcywgYW5kIGludGVyamVjdGlvbnMuCmFuZCAyLiBJZiB5b3UndmUgYmVlbiBzaWxlbnQgYW5kIGx5aW5nLCBDb3JpbiBkb2Vzbid0IGJvbmQgd2l0aCB5b3UgYXQgdGhlIGxha2UgYW5kIHRlbGwgeW91IGFib3V0IGhpcyBtb20u