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About Our Brief Eternity
Our Brief Eternity is a short, narrative‑driven adventure where an ordinary protagonist lives with an aristocratic vampire and a clumsy witch. Their daily life—shopping, games, late‑night talks—creates moments that shape a story with four distinct endings. The game runs about three to five hours, offering 130,000 words of script, multiple CGs, and a focus on choices that affect relationships and the ultimate fate of the trio.
01 / THE GUIDE
Story and Endings
The plot follows Lin Xiaocou as he unexpectedly hosts a proud vampire and a lively witch. Their interactions explore themes of mortality, companionship, and the tension between eternal life and fleeting moments. Players make choices that lead to one of four clearly different conclusions, ranging from embracing eternity to cherishing the present. Each path reflects how the protagonist balances the desires of his supernatural housemates with his own humanity.
- Observe how each character reacts to your decisions; subtle dialogue hints often foreshadow the ending you’re heading toward.
- Consider the long‑term implications of accepting an immortal life versus preserving the limited time you have.
02 / THE GUIDE
Vampire Character
The vampire, voiced by w小璃, is over three hundred years old, proud, and initially cold. She despises trouble yet becomes a homebody who enjoys Lin's company, hiding inner turmoil behind a haughty demeanor. Her backstory includes fleeing an unchanging castle life and viewing Lin's house as a temporary base. Over time she grows curious about human mortality and forms a deeper bond with the protagonist.
- Pay attention to her “not difficult, but very troublesome” requests; they often reveal her hidden warmth.
- Her aristocratic speech may mask vulnerability—listen for moments when she expresses genuine affection.

03 / THE GUIDE
Witch Character
The witch, voiced by 舟玄, is over one hundred years old, lively, and clumsy. A magical accident stopped her aging, leaving her with endless curiosity and a belief that "fun" is life’s creed. She entered Lin's home after a teleportation mishap and stayed after tasting his desserts. Though prone to minor mishaps, she strives to blend into human life and gradually learns to express her true self.
- Her cheerful exterior often hides deeper sensitivity; notice when her mood shifts dramatically.
- She values “fun” above all—engaging in lighthearted activities can strengthen her trust.
04 / THE GUIDE
Input Options
Our Brief Eternity supports a wide range of input methods: full controller support, keyboard‑only, mouse‑only, and touch‑only options. Players can choose any of these without timed input constraints, allowing comfortable play at their own pace. The game also offers camera comfort and color alternatives, ensuring accessibility for various visual preferences. These accessibility settings are available in the game's options.
- Try the touch‑only mode if you prefer a more relaxed, point‑and‑tap experience.
- Switch between controller and keyboard to find the most natural feel for dialogue choices.
05 / THE GUIDE
Saving and Cloud Features
The game allows saving at any moment, giving players freedom to pause and reflect before making crucial decisions. Progress can also be backed up via Steam Cloud, protecting saves across installations. Family Sharing is supported, letting family members access the game on their own accounts.
- Use the “Save Anytime” feature before major branching points to experiment with different outcomes.
- Enable Steam Cloud to keep your progress safe if you switch computers.





COMMUNITY
Player discussion