The Lord of the Mountain — James Lovegrove

Tom Yamada seems like any 15-year-old but he's actually a supreme martial artist, training to face a terrifying challenge when he turns 30. It's his destiny to fight the5 Lords of Pain - demons who have been trying to break into our world for centuries. But something's gone wrong. Tom must face the 5 Lords now - and no way is he ready. If he loses, a new Dark Age will begin. No pressure, then, First in a thrilling five-book series bound to captivate reluctant boy readers.