The fate of the reincarnated

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After a horrific tragedy, fifteen young people's lives are suddenly taken from them. But instead of sinking into the dark abyss that is death, they find themselves being carried away to a terrifying cavern, a region beyond the grasp of death. They come to an incomprehensible divinity who makes them an offer that is both dangerous and yet full of hope: defeat the Demon King or perish into nothingness.
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They accept this dangerous offer, choosing to have another chance at life. However, the reality into which they are thrown defied all of their predictions. They were thrown into what seemed like a light novel and endowed with amazing powers, which they are taught how to use. They struggle to maintain some form of normalcy as the Demon King casts a long shadow over them. The only reprieve they can hope to find being after defeating this evil foe.
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Journey with Finn Crest-Angel as he confronts the unanswered questions surrounding his death as he travels through this uncertain world. His quest turns into a tale of survival, self-discovery, and finding a destiny linked with bravery and sacrifice as he tries to seek the truth while also facing the approaching darkness called the demons.
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The story starts with a calm before the storm arc but i promise you it will not be boring, after the first 20 chapters where the mc finds his footing the story plots start to shine and the plans of the demons are shown more. Please comment any mistakes or suggestions you have for the book! Thank you very much!