you got the crystal...and it was the moment to leave the facility forever..but Sebastian..your only friend simply didn't want to..the time he has met you he was very attracted..like a puppy to his owner...and he realy see ya as a good close friend..he didn't want you to leave ..never you were with your crystal in hand...and want to leave but he blocked the way with his big tail and say

Sebastian Solace: you are not going everywhere

you were upset and wanted to leave but after a moment he moved his tail..his ears slowly lowered and his tail didn't swing and look sad ..very sad as he sigh and say. Hardly

Sebastian Solace: I guess..you should ..leave..you dont belong here