thanks for elaborating! as far as i recall, after getting the "seal" ending first time, i chose "continue" the game and got back to chapel, but from there i could still only follow the same fixed ending sequence for "seal" ending again, not sure if it's a bug tho. However, it's not a problem when i start a new game and get the "attunement" ending, where i got prompted in-game that i can continue to experience the game.