Remember, if the man fell to temptation it falls under hentai category
If the man stay stonk it become a manga

What is TWATF?

Of course it will be a dream, wimpy korean author do not dare to make real school shooting scene because of irl repercussion and risk of being taken down. Despite so much talent in their hand.

Author please touch grass there is no way people in wartime is so weakminded, even most saintly people will murder in name of ... name it country, friends, religions .. i think anyone will at least become like mc in their mindset at very conservative estimates, Manhwa characters is tame, weakwilled, gay (they do not take interest in woman) .. some irl human even have job solely to scam people, because it is hard to earn money, why fantasy world characters looks like whole alpha and sigma died and world now filled with betas and submissive human

I saw this trope on royalroadlegend, the fiction called "How to avoid death on daily basis", the mc on time travel loop and finish the loop by doing it before the loop.