The Blood Guard by Carter Roy (9781407137247)

Description - The Blood Guard by Carter Roy

Thirteen-year-old Ronan Truelove leaves school one day and discovers
he's a member of The Blood Guard - an ancient order of protectors.
He will acquire invaluable skills (in swordfighting, subterfuge and
more); learn that he has magical talents he never dreamed of;
rescue his parents from certain death and finally fall for the wrong
girl and overlook the right one.

Only then will he find out his true purpose: guarding a geeky girl
computer genius, and by saving her, save the world.

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