Project_WL/Assets/Script/UI/Ingame/Dungeon/Ingame_Nightmare.cs

using System;
using TMPro;

public class Ingame_Nightmare : Ingame_DungeonBase
{
    public TextMeshProUGUI[] texts; // 0 데미지

    public override void Set_TotalDmg(double dmg)
    {
        texts[0].text = NumberFormatter.FormatNumber(Math.Truncate(dmg));
    }
}