The Demi-God's Adventure

The Demi-God's Adventure summary:

Arthur is lazy but a smart 15 year-old boy who thinks that working is not necessary to his life. While walking home from school with "Megan", the girl he likes, the remnants of the terrorists that went to their neighborhood attacked them and he was killed. 
 
After dying, G.o.d summoned him at once and gave him a chance to be reincarnated, and thus rising the curtain on an epic adventure where swords, wars, and magics are common!