A typical modern 19-year old girl named Mai gets reincarnated into another world and... wait... She is now the main protagonist's mother, Rosalyna, in her ex-favorite anime and is destined to die at any moment due to the anime mom hair trope. Mai has to survive every death flag coming in her way and raise Rosalyna's son to be a better person as the love interests have some connections with her that was never told/shown on-screen.

[From itch.io]