\documentclass{book}

\usepackage{polyglossia} % must be before fontspec
\setdefaultlanguage{english} % must be after polyglossia

\usepackage{fontspec}

\usepackage[backend=biber, style=alphabetic]{biblatex}
\addbibresource{document.bib}

\usepackage{expex} % Load expex AFTER fontspec/polyglossia
\usepackage{booktabs}
\usepackage{caption}
\usepackage{fancyhdr}
\usepackage[margin=1in]{geometry}

\usepackage[section,toc]{glossaries}
\makeglossaries

\usepackage{graphicx}

\usepackage{hyperref}
\hypersetup{colorlinks=true, linkcolor=blue}

\usepackage{subcaption}
\usepackage{xltabular}

\setmonofont{Charis SIL}
\setmainfont{Gentium Plus}
\newfontfamily\japanese{MS Mincho}

\newcommand\textipa[1]{\texttt{#1}}

\input{glossary}

\title{\textsc{Hazn}}
\author{Nomid Lomysz}

\pagestyle{fancy}
\lhead{Hazn}
\chead{}
\rhead{\thepage}
\lfoot{}
\cfoot{}
\rfoot{}

% Start the document
\begin{document}

\frontmatter

\maketitle
\tableofcontents

\include{introduction}

\mainmatter

\include{part.the-wind-blowers-of-destiny}

\include{part.a-language-for-the-hazn}

\include{part.silence}

\include{part.noise}

\backmatter

\include{part.glossary}

\printbibliography

\end{document}