FNF Onimai Oneshot!

Get Ready for a Sisterly Rap Battle

Dive into the world ofOnimai: I'm Now Your Sister!with theFNFOnimai Oneshotmod! This fun and stylish mod brings the characters Mahiro and Mihari together in a high-energy rap battle set to the track“Identity.”Whether you're a fan of the anime or just love some fresh FNF action, this mod delivers a unique and exciting experience — now fully optimized for your browser.

What Is FNF Onimai Oneshot?

This Friday Night Funkin’ mod is inspired by the hit animeOnimai, where the protagonist Mahiro accidentally transforms into his little sister, Mihari. In this mod, the two siblings go head-to-head in a musical showdown, with the cool and collected Kaede watching from the sidelines. The mod features a single, intense song titled“Identity,”which captures the quirky and emotional heart of the series through rhythm and lyrics.

The mod is built to be played directly in your browser, making it easy for anyone to jump in — whether you're on a Chromebook, Mac, Linux, or a low-end PC. It’s a great way to enjoy the mod without worrying about downloads or system compatibility.

Mod Creators & Contributors

A talented team of modders brought this project to life, each contributing their skills to make the experience as smooth and engaging as possible:

Main Mod Team

• Zeosu[Gensei Channel]– Charter / Coder
• Mizumi & dedede– Artists
• baroonscary– Composer
• Synth_The_Hedgehog– Script & Events
• RamenDominoes– Cinematics Event

Original Source

• Nekotofu– Creator ofOnimai: I’m Now Your Sister!

Gamebanana Page

Powered by a Polished FNF Engine

This browser version is made possible thanks to a custom-built FNF engine that brings the mod to life in your web browser. Here are the key contributors behind the engine:

• ShadowMario– Main Programmer
• bbpanzu– Additional Programmer
• RiverOaken– Main Artist / Animator
• And many more from the open-source community on GitHub

Original FNF Creators

Friday Night Funkin’ was originally created by a passionate group of developers during a Ludum Dare event. We salute their continued work and impact on the modding community:

• ninja_muffin99– Programming
• PhantomArcade3kandevilsk8r– Artists
• kawaisprite– Music
• And all the GitHub contributors who helped shape the game

Play Anytime, Anywhere

The main goal of this web-optimized version is to make the mod more accessible. If you've got a low-end device, limited storage, or just prefer playing in your browser, this is the perfect solution. While some features or mechanics may differ slightly from the original PC build, the core experience remains intact. For the full mod experience, we recommend downloading the PC version if your system supports it.

So, are you ready to take on the Onimai sisters? Step into the ring and show off your rhythm skills in this one-of-a-kind FNF mod!