The Short, Honest Answer
Neither Nemlei nor Kit9 Studio has ever published official ages for Andrew or Ashley Graves, and the game itself never numbers them - no birthday scene, no ID card, no line of dialogue that pins either sibling to a year. Any page, wiki or video that gives you exact ages as fact is repeating a community estimate that hardened through repetition, not reporting a source. This post will not do that; it will show you the evidence instead.
What can be said with confidence: both are written and presented as adults - young adults, living (before the quarantine) in their own apartment, with Andrew holding the remains of an adult life that includes a job history and a girlfriend, Julia, met in an adult context. The story's themes are adult themes, the game is adults-only, and its characters are adults within it.
What the Text Establishes
- Andrew is the older sibling - by a small gap; 'Andy' the caretaker role is built on it.
- Both lived independently before the lockdown - their own apartment, their own (failed) adult arrangements.
- Julia is Andrew's girlfriend from his pre-quarantine adult life, not a school connection.
- Childhood is shown as past - Nina and the prank belong to their childhood years, clearly separated from the present-day story.
- Ashley was a child when 'Leyley' stuck - the nickname is a childhood remnant she never escaped, which the story uses deliberately.
Assembled, that evidence sketches two people in the broad territory of early adulthood - old enough for the life the game shows them having lived, young enough that their parents' neglect is a recent, shaping wound rather than ancient history. Anything more precise is decoration added by the fandom.
Where the Popular Numbers Came From
Fan wikis need an age field, so the field got filled - with estimates built from sprite proportions, offhand community posts, and circular citation, until 'the wiki says' started functioning as a source in itself. The estimates cluster in a similar range because they are all reading the same presentation, but a cluster of guesses is not a confirmation, and several of the most-copied numbers trace back to single unsourced edits.
This site's rule applies here as everywhere: we would rather tell you a true 'not stated' than a false precision. If Kit9 Studio ever publishes official ages - in a progress report, an art book, a sequel's materials - this post gets a one-line update and a small celebration. Until then, treat every exact number you meet, including plausible ones, as fanon: fun, widely shared, and not canon.
Why the Silence Might Be Deliberate
Consider what ages would do to the story. Pin Andrew and Ashley to exact years and every argument about them gains a cheap lever: she is only X, he should have known at Y. Leave them unnumbered and the reader is stuck judging what the game actually shows - behaviour, history, responsibility - which is where this writing wants the argument to happen. Vagueness here is not missing lore; it is the same technique as the invisible trust meter. The game withholds the number so you cannot outsource the judgement.
It also keeps the childhood material in its proper register. Nina's death, the prank, the parents' favouritism - these land as formative damage across an unmeasured gap of years, and the gap's unmeasured quality is part of their weight. The Graves siblings are less two people of specific ages than two people who never got to finish becoming anyone. The story does not need their birthdays. It needs you to notice that.
Ages in the Fandom's Own Works
One more place ages appear deserves a label of its own: fan works. Fan artists and fiction writers assign the siblings ages constantly - they must, to write birthdays, school scenes, future timelines - and those assignments, repeated across thousands of works, create a warm fog of consensus that feels like canon and is not. There is nothing wrong with any of it; fanon is the fandom thinking out loud. The problem is only ever the laundering, when a fan work's choice migrates into a wiki field, then a video script, then a 'fact' a new player gets corrected with in a comments section.
So the community service this post can actually perform is small and specific: keep the border visible. Andrew and Ashley Graves are adults of unstated age, older and younger in that order, carrying a childhood the game shows and birthdays it does not. Everything beyond that is a gift the fandom gave itself - enjoy the gift, and do not forge the receipt.
What Would Change If We Knew
Play a thought experiment to close: imagine the next progress report prints two numbers. What actually changes? A few fan works get retconned, wiki fields gain citations, and one long-running argument loses its fuel - while every scene in the game plays identically, because none of them were ever powered by the numbers. Andrew's guilt does not need his age; Ashley's damage does not compound or discount by hers. The experiment reveals the question's true place in the fandom: it is a lore appetite, not an interpretive key, and feeding it would cost the story the one thing its silence protects - your obligation to judge these two by what they do, in the only years of their lives the game has ever shown you.