Look, a journal!

Sorry for the super late response! It was one of those things where I saw the notification, went "oh, I'll get to that later!" and then... didn't.

Anyway, the POV character is the child of an abusive father and an alcoholic mother and the game is framed as them recalling a period of their childhood in which their parents' marriage was deteriorating/ending. During this period, the POV character was also caring for some sea monkeys. The game has multiple endings in which the protagonist recalls the ultimate fate of the sea monkeys differently, most of which are followed by the protagonist's mother or father telling them that's not what happened or the protagonist themself going "no, wait, I don't think that's right, is it?" Getting the true ending involves the protagonist remembering what actually happened to the sea monkeys, providing the protagonist some degree of emotional closure regarding that chapter of their life and also leading to a sort of epilogue segment in which the protagonist has the chance (depending on choices) to sort of move on/reach some kind of peace regarding their difficult childhood.