By using Japanese font (for example 'Meiryo', 'Yu Gothic' etc.) in TextBlock with standard TextBlockStyles, we obtain MOJIBAKE(i.e. character transformation) as below. <Page x:Class="NewApp1.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:NewApp1" xmlns:d="http://schemas.microsoft.com/expression/b