This is a Twine game with lovingly crafted visuals, using backgrounds, animations, and various techniques like mouseover links, cycling links, etc.
I did something with it that is likely bad for the experience, like people who use online recipes and complain ‘I substituted ground dates for the chocolate and it tasted terrible!’. In my case, I downloaded the file and changed all of the timed text links to have a 0 second timer. Some of the original timers were 6 seconds and it was just agonizing to play.
So my experience may not be the one intended.
The story imagines a world where a common parasite exists that can puppet a body’s nervous and muscular systems after death, allowing corpses to speak and to remember.
Your brother has been found, and you have been called in to talk to him.
The main content of the game is divided between the top layer (you talking directly with the player) and the bottom layer (your memories and feelings about your brother). This is not a happy relationship whatsoever. It implies that your brother was extremely abusive; at first I thought it was sexual abuse, and may be, but physical abuse seems much more likely.
The game is effective in its communication of both the bitter anger after abuse but also the self-doubt. Where the writing is most effective in my opinion is that it contrasts scenes of deep hatred and unhappiness with scenes of love and affection. The variation in emotion and tone gives a much stronger gravitas to the scenes of pain and violence.