Lucent (adj.) softly bright or radiant

These are just some characters I made in Gacha Club, and these are their backstories and who they know and such

What is a "red flag"? Am I a "red flag"? How many "red flags" do I have? Can you help me?

The outside world is a terrible place. Home is the only place I feel safe. No My room is the only place I feel safe.