[Peanutbutter]

Originally Posted by LKK

Has it been mentioned in the anime that Ion has an unhealthy body? If it has, then I missed that point.

Spoiler for Ep 2:

After Jade killed the Liger Queen, he looked at Ion, knew he had used his Daathic Artes and prompted him not to do that again cause the doctor said so.

Pretty self-explanatory. Also, you'll notice Ion is the one that's usually tired.