Truth mask is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

无免同学偶然获得了一副戴上后无论做什么都会被人绝对认同的面具。然而即便如此他也没能鼓起勇气向暗恋的女生告白。直到发生那个将他的生活完全颠覆的事件
Inevitably, the classmates accidentally obtained a mask that would be absolutely recognized by anyone no matter what they do. But even so he failed to courageously confess to the crush girl. Until the event that completely subverts his life