My Best Friend Yui

An after-school plan that stops feeling safe

My Best Friend Yui opens on the most ordinary afternoon imaginable. Class is over, your best friend wants to spend time together, and the plan is nothing more complicated than hanging out. The pitch even tells you how to cope: take a deep breath, relax, and let your worries melt away.

Then the small things stop lining up. A reply arrives a beat too late. A smile holds a beat too long. My Best Friend Yui never announces the moment the afternoon turns, which is exactly why the turn lands so hard when you finally notice it has already happened.

That slow slide is the whole design. My Best Friend Yui does not ask you to fight or flee at first. It asks you to keep being polite to someone whose behaviour has quietly stopped making sense, and it lets you sit in that discomfort until being polite becomes the most frightening option available.

What is My Best Friend Yui?

My Best Friend Yui is a psychological horror visual novel created by Ruchyan and built in Ren’Py. It carries dating sim, horror, and yandere tags at once, and it earns all three. You read, you choose, and the story reacts. There is no combat system and no puzzle layer to master.

Yui is the reason the game works. Charming, attentive, and completely unwilling to accept distance, Yui behaves like a friend right up to the point where friendship becomes a cage. Players who finish My Best Friend Yui tend to talk about the character first and the scares second.

The horror is psychological rather than purely visual, but it is not shy. My Best Friend Yui uses blood, violent outcomes, and a handful of well-placed jumpscares. What unsettles most people is the ordinariness around those moments: a school hallway, a kitchen, a conversation that should have been harmless.

How to play My Best Friend Yui online

Press Play now in the panel above to launch My Best Friend Yui in your browser. Nothing loads until you click, which keeps this page fast and prevents unexpected audio from a horror title. When the Ren’Py title screen appears, click or tap to advance text and pick from the on-screen choice menus.

Desktop players will find a mouse or trackpad most comfortable, and touch performs the same actions on a phone or tablet. The Ren’Py menu row gives you Back, History, Skip, Auto, Save, Q.Save, Q.Load, and Prefs. Use fullscreen when the dialogue box feels cramped, since My Best Friend Yui hides detail in its sprites and backgrounds.

Give the first launch real time. This is a full visual novel with voiced sound design, art, and music rather than a lightweight page, so the initial download can take a while on a slow connection. Once the menu responds, open Prefs and set text speed and volume before starting My Best Friend Yui in earnest.

Yui, and what a toxic friend really wants

The marketing joke is that the best way to deal with a toxic friend is to relax. My Best Friend Yui takes that advice literally and then shows you the cost of following it. Every polite deflection, every attempt to smooth things over, is a decision the story remembers and eventually charges you for.

What makes Yui compelling is the refusal to explain. The game hands you enough lore to feel the shape of something inhuman without confirming it, and My Best Friend Yui leaves those gaps open on purpose. You finish a run understanding how Yui behaves far better than you understand what Yui is.

Endings, memories, and the hidden fifteenth

There are 15 endings. Fourteen are reachable through ordinary choices, and the fifteenth is a hidden one that only appears after you have collected the rest. The trick that catches most players is simple: start a completely fresh run from the beginning instead of loading a save, and My Best Friend Yui gives up its final scene.

Alongside the endings, the game tracks collectable memories, the CG-style images tied to specific outcomes. The ending involving a hammer now awards its own memory, so a completionist run of My Best Friend Yui means chasing both lists at once. Names players trade around include “the feeling is mutual”, “accidents happen”, “breathtaking”, and “masochist”.

What the most recent update changed

The current build is a revision rather than the launch version, and the changes are worth knowing before you compare notes with someone who played earlier. Two new jumpscares were added, landing in ending 7 and in the basement scene, and audio was layered into several scenes that previously ran quieter than intended.

A few smaller fixes matter more than they sound. Dialogue in one scene was rewritten so it finally reads correctly, the hammer ending gained its own collectable memory, and blood effects were recoloured to match the character they belong to. An Android release also arrived after launch, though the browser version above skips the install entirely.

Tips for collecting endings without spoiling the story

Play your first run honestly. Guides exist, but following one before you have met Yui turns a horror story into bookkeeping and drains the tension that makes My Best Friend Yui worth playing. Let your natural reactions produce an ending, then treat the ending list as a map of what you have not yet risked.

Branch points cluster around a few recurring decisions: whether you go to the basement, whether you pick up a weapon, whether you head for the kitchen, and how long you spend stalling. Several endings in My Best Friend Yui come from doing nothing useful at the wrong moment, so wasting time is a legitimate strategy rather than a mistake.

Content warning and age guidance

My Best Friend Yui is published for players aged 18 and above. Expect obsessive and possessive behaviour, threats, blood, violent deaths, and jumpscares placed where they will do the most damage, including ending 7 and the basement scene. The yandere framing is affectionate on the surface and coercive underneath.

Treat that rating as real. My Best Friend Yui is not a gore showcase, but it is a story about someone who will not let you leave, and it commits to that idea in ways that can genuinely upset players who find controlling relationships distressing. It is unsuitable for children and for shared or public screens.

Saving, sessions, and devices

A full session runs a few hours because the game is built for repeat runs, while a single ending is short. Use the Save menu rather than relying on Q.Save alone, and keep separate slots before the choices that clearly branch. Browser storage can be wiped by private mode, cleanup tools, or cleared site data.

Named saves also make ending collection far less tedious in My Best Friend Yui. One slot before the basement decision and one before the weapon choice will save you a great many repeated openings. The one exception is the hidden ending, which specifically wants a clean start rather than a loaded save.

Troubleshooting My Best Friend Yui

If the screen stays black after launch, wait longer before refreshing, because the build is much larger than a normal page. Confirm that JavaScript is enabled, allow audio, and check whether a privacy extension or in-app browser is blocking the separate host that serves the game files. Reload once, then press Play now again.

If My Best Friend Yui stutters, close other heavy tabs and try fullscreen, which usually helps on older phones and low-memory laptops. Audio is a real part of the horror here, so fix muted sound before assuming a scene is broken. A standard, up-to-date desktop or mobile browser remains the most reliable way to play.

About this unofficial My Best Friend Yui page

This is an unofficial fan page that embeds and explains the freely available browser build. My Best Friend Yui was written, drawn, and developed by Ruchyan, who has stated that no generative AI was used in its creation. All rights to the game, its characters, artwork, audio, and files belong to their respective rights holders.

This site does not claim ownership of the title and is not affiliated with its developer. The goal here is simply to make My Best Friend Yui easy to launch, honest about its 18+ rating, and clear about how its endings work. Take a deep breath, relax, and let your worries melt away. Yui insists.

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