The ending of the Demon Slayer manga sees the main characters achieving their goals and finding some form of peace. But to avoid spoilers, I suggest you read it yourself to experience the full impact.
The ending of the Demon Slayer manga is a mix of closure and hope. The heroes overcome the challenges, and there's a sense of a new normal emerging. It ties up loose ends while leaving room for imagination about the future of the characters.
In general, the ending of the Demon Slayer anime sticks to the manga storyline. Some visual and pacing elements could be different, but the main events and resolutions are the same.
The ending of 'The Birds' is both mysterious and thought - provoking. After the intense and harrowing experiences of being attacked by the birds, Melanie, Mitch, and the others are able to get into a car and start to drive away. The birds that were once so aggressive have become quiet. Hitchcock deliberately left this ending open - ended. It could be that the birds' aggression was a short - lived phenomenon, or it could be that they were simply following some instinctual pattern that had run its course. This ending also serves to heighten the sense of dread and the unknown. We are left with the characters, and by extension, the audience, still in a state of fear and uncertainty as they leave the scene of the attacks, not knowing if the birds could resume their attacks at any time in the future.