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Unity‐chan Costume Tutorial

DogeThis edited this page Aug 8, 2026 · 99 revisions

In this tutorial, we will fit the Unity-Chan! Sunny Side Up costume for use on female characters.

By the end of the tutorial, we will have the costume in-game as a Cobalt mod.

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No experience with Blender or Unity is needed before starting this tutorial.

Requirements for Engage

You should have the latest version of Cobalt installed.

You should have a save file where you have access to the accessory shop on the Somniel. If you don't have one, you can find one on Gamebanana.

A dump of the game will be helpful for the XML steps, but isn't required.

Required Programs

You will need to have these programs installed.

  1. Blender. This tutorial using Blender 5.0, but should be compatible with future versions as well.
  2. Robust Weight Transfer, a free Blender plugin. Note that if you have Blender 5.1 or above, you should download robust-weight-transfer-libigl26.zip.
  3. Unity.
  4. A text editor of your choice OR Astra.

Starting Files

  1. (Optional) The finished mod if you want to try it out in-game first.
  2. This Engage female base body
  3. The Unity-chan costume FBX
  4. The Unity-chan costume textures.

First steps

Once you have Blender set up and have downloaded the starting files, you can continue to the first steps in Blender section.

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