ModsJava
Yaju Senpai MOD
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
The "野獣先輩" MOD
This MOD adds this Yaju Senpai items and blocks.
Forge is required before 1.16
1.17 requires Fabric API
From 1.19 onwards, Architecture API is required, FabricAPI is required for Fabric , and QFAPI/QSL is required for Quilt .
Do not install if you do not know Yaju Senpai
Take no responsibility for feeling sick or destroying the world
World backup recommended before installation.
This is just a japanese meme mod, not a virus.
If you can't trust it, check the source code.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as yajusenpai-forge-1.19-2022-1.4.jar — drop this file into the mods folder
- Download size: 30.2 MB
- Download link checked 23 Sept 2026 — working
These come from our own check of the pack file, not from the source page.