Since the chapters I saw were not translated it was difficult to understand the plot but The MC will sacrifice himself so that they can complete the mission or save ML I don't really know why..... But the ending isn't sad (I can't say happy because I didn't understand what happened exactly) but the manhwa will end with them starting over together
I'm sorry I know my spoilers are scattered and annoying but I wasn't focusing on the dialogue, only the images and events. Sorry

Be prepared guys the upcoming chapters are sad and tearful
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