It is a nice story and i love how you do not see what is happening. By only seeing the clouds (staring into the sky) and text you are making a connection between them, thus it is clear that your character is reliving their past without you ever having to explicitly say " HEY YOU, LISTEN! HE IS NOT REALLY TALKING TO SOMEBODY". Ironically, this is a perfect example for "show, don`t tell".
The only thing that I am missing is some sort of player input. It is totally fine to have just one ending and for you not to be able to die/lose, but yet i feel like some sort of interaction would be nice.
In this scenario, for example: the player needs to push the clouds away, so they get the next message.