Teru is an orphan with very little money, goes to school on a scholarship, and even though she is bullied she can always smile. Maybe it's because Daisy is looking out for her, the mysterious person she sends text messages to through the phone her brother left her before he died. All Teru knows about Daisy is he knew her brother and he trusted him, and he will protect her no matter what.
I can't go into much more detail because I will be revealing spoilers.
Let me say, that everyone should read this sixteen volume series! Everyone. It might take a while, there is a lot of dialogue and you have to concentrate to make sure you don't miss anything pertinent to the story. At times, it can be a little preachy but I think that is perfect for this story. In a way, this is how I want to live my life, able to forgive and help others. We should treat each other better.
Over the top action and impossible situations (for us mere mortals of reality) and great slapstick comedy, this is all balanced with heart wrenching moments that may bring tears to your eyes.