tachiyomi/app/src/main/res/anim/fade_out_short.xml

<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="100"
    android:fromAlpha="1.0"
    android:interpolator="@android:interpolator/linear"
    android:toAlpha="0.0" />