Nope. 'All of Us Are Dead' is purely fictional. The plot, characters, and situations are made up to provide an exciting and captivating viewing experience, not to represent actual happenings.
In 'All of Us Are Dead', the love story is often about the relationships that form under extreme circumstances. For example, some characters might develop feelings for each other while fighting for survival against the zombies. Their love is tested by the constant threat around them and the need to protect not only each other but also their friends.
One real - story element is the idea of a group being isolated in a confined space, like the students in the school. It's similar to how people might be quarantined during an actual epidemic.
Yes, 'All of Us Are Dead' is based on a webtoon, which can be considered as having some elements inspired by real - world ideas. For example, the concept of a virus outbreak and how people react in a crisis situation might draw on real - life concerns about infectious diseases and social unrest during disasters.
The main characters include Cheong - san, On - jo, Su - hyeok and Nam - ra. They play important roles in the fight for survival during the zombie outbreak.