[DoomCalibur]

Originally Posted by Jirachier

I like this series, though I wonder how Kurou is going to power up seeing how he's not a Swordie so he can't use the light energy.

If that was what you think then perhaps you should see till the end of vol 1 but I can reveal a bit for you something interesting:

Spoiler for Secrets. Read at your own risk:

1. Kurou could actually power up himself but only when he was facing the death. In this power up state, he became a ruthless monster retaining nothing but his thirst for destruction. Well though in vol 1 he had not yet reached this stage, he still could power up a bit to deliver the last attack to his enemy. Only in vol 2 does he become a true "monster".
2. He could use "light" but with a different color than usual swordians. However the after effect is that his body got attacked by strong sense of dizziness due to the fact human body is incompatible with "light".
You will the rest of the detail at the end of vol 1. And btw I could reveal you something shocking as well: you all must know the fact that the sword saint, who was Kurou's master, has disappeared many years ago right? Actually her sister, the sword's general, Kurou's current boss suspected that Kurou was the one who killed her even though Kurou stated that he couldn't remember well his last battle with his master and when he awoke, his master was already disappeared without leaving a single word behind.
That's all I could provide. It would be better if you read the whole vol 1 though.